Course: Physics - KhanAcademy

Section outline

Select section General

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General

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Select section 1. Units and Measurements

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1. Units and Measurements
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  System of Units
  
  Select activity Fundamental and Derived quantities
  
  Fundamental and Derived quantities Lesson
  
  Students must
  
  Mark as done
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  Measurement of Length
  
  Select activity Scale of the large
  
  
  
  Scale of the large Lesson
  
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  Select activity Parallax in observing stars
  
  
  
  Parallax in observing stars Lesson
  
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  Select activity Stellar distance using parallax
  
  
  
  Stellar distance using parallax Lesson
  
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  Select activity Stellar parallax clarification
  
  
  
  Stellar parallax clarification Lesson
  
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  Select activity Scale of the small
  
  
  
  Scale of the small Lesson
  
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  Dimensions and Dimensional Analysis
  
  Select activity 1st application of Dimensional analysis
  
  1st application of Dimensional analysis Lesson
  
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  Select activity Worked example: Dimensional analysis
  
  Worked example: Dimensional analysis Lesson
  
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  Significant figures
  
  Select activity Significant figures
  
  
  
  Significant figures Lesson
  
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  Select activity More on significant figures
  
  
  
  More on significant figures Lesson
  
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  Select activity Multiplying and dividing with significant figures
  
  
  
  Multiplying and dividing with significant figures Lesson
  
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  Select activity Addition and subtraction with significant figures
  
  
  
  Addition and subtraction with significant figures Lesson
  
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  Select activity Why do we need significant figures?
  
  
  
  Why do we need significant figures? Lesson
  
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  Select activity Rules for determining significant figures
  
  
  
  Rules for determining significant figures Lesson
  
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  Select activity Scientific notation examples
  
  
  
  Scientific notation examples Lesson
  
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  Select activity Express a small number in scientific notation (example)
  
  
  
  Express a small number in scientific notation (example) Lesson
  
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Select section 2. Mathematical Methods

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2. Mathematical Methods
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  Vector Analysis
  
  Select activity Introduction to vectors & scalars
  
  
  
  Introduction to vectors & scalars Lesson
  
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  Select activity Visualizing vectors in 2 dimensions
  
  
  
  Visualizing vectors in 2 dimensions Lesson
  
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  Select activity Worked ex: vector magnitude and direction
  
  
  
  Worked ex: vector magnitude and direction Lesson
  
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  Vector Operations
  
  Select activity Addition of vectors
  
  
  
  Addition of vectors Lesson
  
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  Select activity Parallelogram rule for vector addition
  
  
  
  Parallelogram rule for vector addition Lesson
  
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  Select activity Subtracting vectors with parallelogram rule
  
  
  
  Subtracting vectors with parallelogram rule Lesson
  
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  Resolution of vectors
  
  Select activity Unit vectors and engineering notation
  
  
  
  Unit vectors and engineering notation Lesson
  
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  Select activity Unit vector notation
  
  
  
  Unit vector notation Lesson
  
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  Select activity Unit vector notation (part 2)
  
  
  
  Unit vector notation (part 2) Lesson
  
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  Multiplication of Vectors
  
  Select activity Worked example: scalar multiplication of vectors
  
  
  
  Worked example: scalar multiplication of vectors Lesson
  
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  Select activity Dot vs. cross product
  
  
  
  Dot vs. cross product Lesson
  
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  Select activity Calculating dot and cross products with unit vector notation
  
  
  
  Calculating dot and cross products with unit vector notation Lesson
  
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  Introduction to Calculus
  
  Select activity Calculus: Derivatives 1
  
  
  
  Calculus: Derivatives 1 Lesson
  
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  Select activity Calculus: Derivatives 2
  
  
  
  Calculus: Derivatives 2 Lesson
  
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  Select activity Introduction to integral calculus
  
  
  
  Introduction to integral calculus Lesson
  
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Select section 3. Motion in a Plane

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3. Motion in a Plane
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  Rectilinear Motion
  
  Select activity Distance and displacement introduction
  
  
  
  Distance and displacement introduction Lesson
  
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  Select activity Distance and displacement in one dimension
  
  
  
  Distance and displacement in one dimension Lesson
  
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  Select activity Position-time graphs
  
  
  
  Position-time graphs Lesson
  
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  Select activity Position
  
  
  
  Position Lesson
  
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  Select activity Worked example: distance and displacement from position-time graphs
  
  
  
  Worked example: distance and displacement from position-time graphs Lesson
  
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  Select activity Worked example: Properties of Distance and Displacement
  
  
  
  Worked example: Properties of Distance and Displacement Lesson
  
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  Select activity Calculating average velocity or speed
  
  
  
  Calculating average velocity or speed Lesson
  
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  Select activity Average velocity and speed worked example
  
  
  
  Average velocity and speed worked example Lesson
  
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  Select activity X-t graph when velocity is not constant
  
  
  
  X-t graph when velocity is not constant Lesson
  
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  Select activity Instantaneous speed and velocity
  
  
  
  Instantaneous speed and velocity Lesson
  
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  Select activity Position vs. time graphs
  
  
  
  Position vs. time graphs Lesson
  
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  Select activity Slope of the tangent gives us instantaneous velocity
  
  
  
  Slope of the tangent gives us instantaneous velocity Lesson
  
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  Select activity Worked example: on velocity and speed
  
  
  
  Worked example: on velocity and speed Lesson
  
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  Select activity Worked ex: direction of acceleration and velocity
  
  
  
  Worked ex: direction of acceleration and velocity Lesson
  
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  Motion in Two Dimensions-Motion in a Plane
  
  Select activity Choosing kinematic equations
  
  
  
  Choosing kinematic equations Lesson
  
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  Select activity Race cars with constant speed around curve
  
  
  
  Race cars with constant speed around curve Lesson
  
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  Select activity Intro to motion with constant acceleration
  
  
  
  Intro to motion with constant acceleration Lesson
  
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  Select activity Average velocity for constant acceleration
  
  
  
  Average velocity for constant acceleration Lesson
  
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  Select activity Impact velocity from given height
  
  
  
  Impact velocity from given height Lesson
  
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  Select activity Calculating car's velocity using skid marks
  
  
  
  Calculating car's velocity using skid marks Lesson
  
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  Select activity Sign of gravity in free fall
  
  
  
  Sign of gravity in free fall Lesson
  
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  Select activity Worked example: motion problems (with definite integrals)
  
  
  
  Worked example: motion problems (with definite integrals) Lesson
  
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  Select activity Worked example: free fall, object thrown up from a building
  
  
  
  Worked example: free fall, object thrown up from a building Lesson
  
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  Select activity Intro to relative velocity
  
  
  
  Intro to relative velocity Lesson
  
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  Select activity Calculating relative velocity
  
  
  
  Calculating relative velocity Lesson
  
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  Select activity Relative velocity in 2d
  
  
  
  Relative velocity in 2d Lesson
  
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  Projectile Motion
  
  Select activity Horizontally launched projectile
  
  
  
  Horizontally launched projectile Lesson
  
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  Select activity Projectile at an angle
  
  
  
  Projectile at an angle Lesson
  
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  Select activity Total displacement for projectile
  
  
  
  Total displacement for projectile Lesson
  
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  Select activity Total final velocity for projectile
  
  
  
  Total final velocity for projectile Lesson
  
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  Select activity Correction to total final velocity for projectile
  
  
  
  Correction to total final velocity for projectile Lesson
  
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  Select activity Projectile on an incline
  
  
  
  Projectile on an incline Lesson
  
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  Uniform Circular Motion
  
  Select activity Angular velocity and speed
  
  
  
  Angular velocity and speed Lesson
  
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  Select activity Visual understanding of centripetal acceleration formula
  
  
  
  Visual understanding of centripetal acceleration formula Lesson
  
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  Select activity Distance or arc length from angular displacement
  
  
  
  Distance or arc length from angular displacement Lesson
  
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  Select activity Deriving formula for centripetal acceleration from angular velocity
  
  
  
  Deriving formula for centripetal acceleration from angular velocity Lesson
  
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  Select activity Calculus proof of centripetal acceleration formula
  
  
  
  Calculus proof of centripetal acceleration formula Lesson
  
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  Select activity How to solve a projectile motion problem?
  
  
  
  How to solve a projectile motion problem? Lesson
  
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  Select activity Radius comparison from velocity and angular velocity: worked example
  
  
  
  Radius comparison from velocity and angular velocity: worked example Lesson
  
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  Select activity Linear velocity comparison from radius and angular velocity: worked example
  
  
  
  Linear velocity comparison from radius and angular velocity: worked example Lesson
  
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  Select activity Change in period and frequency from change in angular velocity: worked examples
  
  
  
  Change in period and frequency from change in angular velocity: worked examples Lesson
  
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Select section 4. Laws of Motion

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4. Laws of Motion
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  Newton’s Laws of Motion
  
  Select activity Newton's first law of motion concepts
  
  
  
  Newton's first law of motion concepts Lesson
  
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  Select activity Newton's first law of motion
  
  
  
  Newton's first law of motion Lesson
  
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  Select activity Newton's second law of motion
  
  
  
  Newton's second law of motion Lesson
  
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  Select activity Introduction to momentum
  
  
  
  Introduction to momentum Lesson
  
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  Select activity Impulse and momentum dodgeball example
  
  
  
  Impulse and momentum dodgeball example Lesson
  
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  Select activity Bouncing fruit collision example
  
  
  
  Bouncing fruit collision example Lesson
  
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  Select activity Momentum: ice skater throws a ball
  
  
  
  Momentum: ice skater throws a ball Lesson
  
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  Select activity 2-dimensional momentum problem
  
  
  
  2-dimensional momentum problem Lesson
  
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  Select activity 2-dimensional momentum problem (part 2)
  
  
  
  2-dimensional momentum problem (part 2) Lesson
  
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  Select activity Change in momentum from force-time graphs
  
  
  
  Change in momentum from force-time graphs Lesson
  
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  Select activity Measuring the speed of a bullet using a block and a string
  
  
  
  Measuring the speed of a bullet using a block and a string Lesson
  
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  Select activity Newton's third law of motion
  
  
  
  Newton's third law of motion Lesson
  
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  Select activity More on newton's third law
  
  
  
  More on newton's third law Lesson
  
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  Select activity Example: analysing motion using newton's laws
  
  
  
  Example: analysing motion using newton's laws Lesson
  
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  Inertial and Non-Inertial Frames of Reference
  
  Select activity Centrifugal force | Pseudo force and Non-inertial frames of reference
  
  Centrifugal force | Pseudo force and Non-inertial frames of reference Lesson
  
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  Types of Forces
  
  Select activity Four fundamental forces
  
  Four fundamental forces Lesson
  
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  Conservative and Non-Conservative Forces and Concept of Potential Energy
  
  Select activity Conservative forces
  
  Conservative forces Lesson
  
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  Common forces in mechanics
  
  Select activity Worked example: forces and motion
  
  Worked example: forces and motion Lesson
  
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  Work Energy Theorem
  
  Select activity Work-energy theorem
  
  
  
  Work-energy theorem Lesson
  
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  Select activity Work and the work-energy principle
  
  
  
  Work and the work-energy principle Lesson
  
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  Select activity Work/energy problem with friction
  
  
  
  Work/energy problem with friction Lesson
  
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  Principle of Conservation of Linear Momentum
  
  Select activity Types of forces and free body diagrams
  
  
  
  Types of forces and free body diagrams Lesson
  
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  Select activity Breaking down forces for free body diagrams
  
  
  
  Breaking down forces for free body diagrams Lesson
  
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  Select activity Free body diagram with angled forces: worked example
  
  
  
  Free body diagram with angled forces: worked example Lesson
  
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  Select activity Momentum conservation - solved example
  
  
  
  Momentum conservation - solved example Lesson
  
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  Select activity Momentum conservation derivation (2 bodies colliding)
  
  
  
  Momentum conservation derivation (2 bodies colliding) Lesson
  
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  Select activity Worked example: tension in a rope
  
  
  
  Worked example: tension in a rope Lesson
  
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  Select activity Worked example: conservation of energy
  
  
  
  Worked example: conservation of energy Lesson
  
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  Collisions
  
  Select activity Elastic and inelastic collisions
  
  
  
  Elastic and inelastic collisions Lesson
  
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  Select activity Solving elastic collision problems the hard way
  
  
  
  Solving elastic collision problems the hard way Lesson
  
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  Select activity Deriving the shortcut to solve elastic collision problems
  
  
  
  Deriving the shortcut to solve elastic collision problems Lesson
  
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  Select activity How to use the shortcut for solving elastic collisions
  
  
  
  How to use the shortcut for solving elastic collisions Lesson
  
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  Select activity What if humans could jump like fleas?
  
  
  
  What if humans could jump like fleas? Lesson
  
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  Impulse of a force
  
  Select activity Impulse
  
  Impulse Lesson
  
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  Rotational analogue of a force - moment of a force or torque
  
  Select activity Introduction to torque
  
  
  
  Introduction to torque Lesson
  
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  Select activity Moments
  
  
  
  Moments Lesson
  
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  Select activity Moments (part 2)
  
  
  
  Moments (part 2) Lesson
  
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  Centre of mass
  
  Select activity Center of mass
  
  Center of mass Lesson
  
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  Select activity Center of mass equation
  
  Center of mass equation Lesson
  
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Select section 5. Gravitation

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5. Gravitation
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  Kepler’s laws
  
  Select activity Orbital motion
  
  Orbital motion Lesson
  
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  Universal Law of Gravitation
  
  Select activity Introduction to gravity
  
  Introduction to gravity Lesson
  
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  Measurement of the Gravitational Constant (G)
  
  Select activity Mass and weight clarification
  
  Mass and weight clarification Lesson
  
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  Acceleration due to Gravity
  
  Select activity Acceleration due to gravity at the space station
  
  Acceleration due to gravity at the space station Lesson
  
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  Select activity Viewing g as the value of earth's gravitational field near the surface
  
  Viewing g as the value of earth's gravitational field near the surface Lesson
  
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  Gravitational Potential and Potential Energy
  
  Select activity Gravitational potential energy at large distances
  
  
  
  Gravitational potential energy at large distances Lesson
  
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  Select activity Worked example: gravitational potential energy of a system
  
  
  
  Worked example: gravitational potential energy of a system Lesson
  
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  Select activity Would a brick or feather fall faster?
  
  
  
  Would a brick or feather fall faster? Lesson
  
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  Earth Satellites
  
  Select activity Space station speed in orbit
  
  
  
  Space station speed in orbit Lesson
  
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  Select activity Impact of mass on orbital speed
  
  
  
  Impact of mass on orbital speed Lesson
  
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  Select activity Gravity for astronauts in orbit
  
  
  
  Gravity for astronauts in orbit Lesson
  
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Select section 6. Mechanical Properties of Solids

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6. Mechanical Properties of Solids
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  Elastic Behavior of Solids
  
  Select activity Elastic and non elastic materials
  
  Elastic and non elastic materials Lesson
  
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  Stress and Strain
  
  Select activity Stress & strain
  
  
  
  Stress & strain Lesson
  
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  Select activity Shear stress and strain
  
  
  
  Shear stress and strain Lesson
  
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  Select activity Strain example problem
  
  
  
  Strain example problem Lesson
  
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  Select activity Femur bone example problem
  
  
  
  Femur bone example problem Lesson
  
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  Hooke’s law
  
  Select activity Intro to springs and Hooke's law
  
  Intro to springs and Hooke's law Lesson
  
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  Elastic modulus
  
  Select activity Young's modulus of elasticity
  
  
  
  Young's modulus of elasticity Lesson
  
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  Select activity Shear modulus
  
  
  
  Shear modulus Lesson
  
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  Select activity Bulk stress
  
  
  
  Bulk stress Lesson
  
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  Select activity Solved example: pressure needed to compress water
  
  
  
  Solved example: pressure needed to compress water Lesson
  
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  Select activity Solved example: percentage change in density
  
  
  
  Solved example: percentage change in density Lesson
  
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  Select activity Why use i beams in construction?
  
  
  
  Why use i beams in construction? Lesson
  
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  Select activity How to strengthen concrete?
  
  
  
  How to strengthen concrete? Lesson
  
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  Select activity How tall can mountains get?
  
  
  
  How tall can mountains get? Lesson
  
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  Stress-Strain Curve
  
  Select activity Stress vs strain curve
  
  Stress vs strain curve Lesson
  
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  Friction in Solids
  
  Select activity Intuition on static and kinetic friction comparisons
  
  
  
  Intuition on static and kinetic friction comparisons Lesson
  
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  Select activity Static and kinetic friction example
  
  
  
  Static and kinetic friction example Lesson
  
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  Select activity Force of friction keeping the block stationary
  
  
  
  Force of friction keeping the block stationary Lesson
  
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  Select activity Correction to force of friction keeping the block stationary
  
  
  
  Correction to force of friction keeping the block stationary Lesson
  
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  Select activity Force of friction keeping velocity constant
  
  
  
  Force of friction keeping velocity constant Lesson
  
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  Select activity Rolling without slipping problems
  
  
  
  Rolling without slipping problems Lesson
  
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Select section 7. Thermal Properties of Matter

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7. Thermal Properties of Matter
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  Temperature and Heat
  
  Select activity Thermal energy, temperature, and heat
  
  Thermal energy, temperature, and heat Lesson
  
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  Measurement of Temperature
  
  Select activity Absolute temperature and the kelvin scale
  
  Absolute temperature and the kelvin scale Lesson
  
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  Absolute Temperature and Ideal Gas Equation
  
  Select activity Thermodynamics part 2: ideal gas law
  
  Thermodynamics part 2: ideal gas law Lesson
  
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  Select activity Thermodynamics part 3: kelvin scale and ideal gas law example
  
  Thermodynamics part 3: kelvin scale and ideal gas law example Lesson
  
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  Ideal Gas Equation
  
  Select activity Charles's law
  
  
  
  Charles's law Lesson
  
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  Select activity Gay Lussac's Law
  
  
  
  Gay Lussac's Law Lesson
  
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  Select activity Boyle's law
  
  
  
  Boyle's law Lesson
  
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  Select activity Ideal gas equation: pv = nrt
  
  
  
  Ideal gas equation: pv = nrt Lesson
  
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  Select activity Ideal gas equation example 2
  
  
  
  Ideal gas equation example 2 Lesson
  
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  Select activity Ideal gas equation example 4
  
  
  
  Ideal gas equation example 4 Lesson
  
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  Thermal expansion
  
  Select activity Introduction to thermal expansion
  
  
  
  Introduction to thermal expansion Lesson
  
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  Select activity Linear expansion
  
  
  
  Linear expansion Lesson
  
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  Select activity Linear expansion numerical
  
  
  
  Linear expansion numerical Lesson
  
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  Select activity Thermal expansion of ring
  
  
  
  Thermal expansion of ring Lesson
  
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  Select activity Area expansion coefficient
  
  
  
  Area expansion coefficient Lesson
  
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  Select activity Volume expansion coefficient
  
  
  
  Volume expansion coefficient Lesson
  
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  Select activity Volume expansion numerical
  
  
  
  Volume expansion numerical Lesson
  
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  Select activity Thermal expansion in liquids
  
  
  
  Thermal expansion in liquids Lesson
  
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  Select activity Thermal expansion in gas
  
  
  
  Thermal expansion in gas Lesson
  
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  Select activity Anomalous expansion of water
  
  
  
  Anomalous expansion of water Lesson
  
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  Select activity Thermal stress
  
  
  
  Thermal stress Lesson
  
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  Specific Heat Capacity
  
  Select activity Specific heat and latent heat of fusion and vaporization
  
  
  
  Specific heat and latent heat of fusion and vaporization Lesson
  
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  Select activity Thermodynamics part 4: moles and the ideal gas law
  
  
  
  Thermodynamics part 4: moles and the ideal gas law Lesson
  
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  Select activity Thermodynamics part 5: molar ideal gas law problem
  
  
  
  Thermodynamics part 5: molar ideal gas law problem Lesson
  
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  Select activity Heat capacity
  
  
  
  Heat capacity Lesson
  
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  Calorimetry
  
  Select activity Constant-pressure calorimetry
  
  Constant-pressure calorimetry Lesson
  
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  Select activity Constant-volume calorimetry
  
  Constant-volume calorimetry Lesson
  
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  Change of State
  
  Select activity States of matter
  
  
  
  States of matter Lesson
  
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  Select activity Phase diagrams
  
  
  
  Phase diagrams Lesson
  
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  Select activity Effect of temp and pressure on state change
  
  
  
  Effect of temp and pressure on state change Lesson
  
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  Heat Transfer
  
  Select activity Thermal conduction, convection, and radiation
  
  
  
  Thermal conduction, convection, and radiation Lesson
  
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  Select activity Thermal conduction
  
  
  
  Thermal conduction Lesson
  
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  Select activity Thermal conductivity of metal and wood
  
  
  
  Thermal conductivity of metal and wood Lesson
  
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  Select activity Intuition behind formula for thermal conductivity
  
  
  
  Intuition behind formula for thermal conductivity Lesson
  
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  Select activity Example: equivalent thermal conductivity
  
  
  
  Example: equivalent thermal conductivity Lesson
  
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  Newton’s Laws of Cooling
  
  Select activity Newton's law of cooling
  
  Newton's law of cooling Lesson
  
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  Select activity Applying newton's law of cooling to warm oatmeal
  
  Applying newton's law of cooling to warm oatmeal Lesson
  
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Select section 8. Sound

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8. Sound
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  Common Properties of all Waves
  
  Select activity Amplitude, period, frequency and wavelength of periodic waves
  
  
  
  Amplitude, period, frequency and wavelength of periodic waves Lesson
  
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  Select activity Sound properties (amplitude, period, frequency, wavelength)
  
  
  
  Sound properties (amplitude, period, frequency, wavelength) Lesson
  
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  Select activity Example: frequency and amplitude from graphs
  
  
  
  Example: frequency and amplitude from graphs Lesson
  
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  Transverse Waves and Longitudinal Waves
  
  Select activity Introduction to waves
  
  Introduction to waves Lesson
  
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  Mathematical Expression of a Wave
  
  Select activity The equation of a wave
  
  The equation of a wave Lesson
  
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  The Speed of Travelling Waves
  
  Select activity Speed of sound
  
  Speed of sound Lesson
  
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  Select activity Relative speed of sound in solids, liquids, and gases
  
  Relative speed of sound in solids, liquids, and gases Lesson
  
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  Echo, reverberation and acoustics
  
  Select activity Echoes and reverberations
  
  
  
  Echoes and reverberations Lesson
  
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  Select activity Production of sound
  
  
  
  Production of sound Lesson
  
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  Select activity Echolocation & S.O.N.A.R
  
  
  
  Echolocation & S.O.N.A.R Lesson
  
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  Select activity Ultrasound medical imaging
  
  
  
  Ultrasound medical imaging Lesson
  
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  Doppler effect
  
  Select activity Introduction to the doppler effect
  
  
  
  Introduction to the doppler effect Lesson
  
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  Select activity Doppler effect formula for observed frequency
  
  
  
  Doppler effect formula for observed frequency Lesson
  
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  Select activity Doppler effect formula when source is moving away
  
  
  
  Doppler effect formula when source is moving away Lesson
  
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  Select activity When the source and the wave move at the same velocity
  
  
  
  When the source and the wave move at the same velocity Lesson
  
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  Select activity Doppler effect for a moving observer
  
  
  
  Doppler effect for a moving observer Lesson
  
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  Select activity Doppler effect: reflection off a moving object
  
  
  
  Doppler effect: reflection off a moving object Lesson
  
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Select section 9. Optics

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9. Optics
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  Nature of light
  
  Select activity Introduction to light
  
  Introduction to light Lesson
  
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  Ray optics or geometrical optics
  
  Select activity Laws of reflection
  
  
  
  Laws of reflection Lesson
  
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  Select activity Cartesian sign conventions mirrors
  
  
  
  Cartesian sign conventions mirrors Lesson
  
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  Select activity Why do we use sign convention twice?
  
  
  
  Why do we use sign convention twice? Lesson
  
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  Reflection
  
  Select activity Concave mirrors
  
  
  
  Concave mirrors Lesson
  
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  Select activity Convex mirror & applications
  
  
  
  Convex mirror & applications Lesson
  
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  Select activity Spherical & parabolic mirrors
  
  
  
  Spherical & parabolic mirrors Lesson
  
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  Select activity Spherical mirrors, radius of curvature & focal length
  
  
  
  Spherical mirrors, radius of curvature & focal length Lesson
  
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  Select activity Convex & concave mirror ray diagrams
  
  
  
  Convex & concave mirror ray diagrams Lesson
  
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  Select activity Mirror formula derivation
  
  
  
  Mirror formula derivation Lesson
  
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  Select activity Solved example: Mirror formula
  
  
  
  Solved example: Mirror formula Lesson
  
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  Select activity Worked example: Magnification in mirrors
  
  
  
  Worked example: Magnification in mirrors Lesson
  
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  Refraction
  
  Select activity Absolute & Relative refractive index
  
  
  
  Absolute & Relative refractive index Lesson
  
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  Select activity Relative & absolute R.I. connection
  
  
  
  Relative & absolute R.I. connection Lesson
  
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  Select activity Refraction and Snell's law
  
  
  
  Refraction and Snell's law Lesson
  
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  Select activity Snell's law example 1
  
  
  
  Snell's law example 1 Lesson
  
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  Select activity Snell's law example 2
  
  
  
  Snell's law example 2 Lesson
  
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  Select activity Refraction in water
  
  
  
  Refraction in water Lesson
  
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  Select activity Refraction through glass slab
  
  
  
  Refraction through glass slab Lesson
  
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  Select activity Advanced sunrise & delayed sunset
  
  
  
  Advanced sunrise & delayed sunset Lesson
  
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  Total internal reflection
  
  Select activity Total internal reflection
  
  
  
  Total internal reflection Lesson
  
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  Select activity Applications of Total Internal Reflection
  
  
  
  Applications of Total Internal Reflection Lesson
  
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  Select activity Worked example: Total internal reflection
  
  
  
  Worked example: Total internal reflection Lesson
  
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  Refraction at a spherical surface and lenses
  
  Select activity Convex lenses
  
  
  
  Convex lenses Lesson
  
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  Select activity Convex lens examples
  
  
  
  Convex lens examples Lesson
  
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  Select activity Concave lenses
  
  
  
  Concave lenses Lesson
  
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  Select activity Virtual Object
  
  
  
  Virtual Object Lesson
  
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  Select activity Power of lens
  
  
  
  Power of lens Lesson
  
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  Select activity Thin lenses in contact
  
  
  
  Thin lenses in contact Lesson
  
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  Select activity Thin lens formula derivation
  
  
  
  Thin lens formula derivation Lesson
  
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  Select activity Lens maker formula (short derivation)
  
  
  
  Lens maker formula (short derivation) Lesson
  
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  Select activity Solved example on lens formula
  
  
  
  Solved example on lens formula Lesson
  
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  Select activity Worked example: Image formed by multiple lenses
  
  
  
  Worked example: Image formed by multiple lenses Lesson
  
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  Select activity Curved surface refraction formula
  
  
  
  Curved surface refraction formula Lesson
  
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  Select activity Solved example: Curved surface refraction
  
  
  
  Solved example: Curved surface refraction Lesson
  
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  Select activity Solved example: Lens makers formula
  
  
  
  Solved example: Lens makers formula Lesson
  
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  Dispersion of light and prisms
  
  Select activity Dispersion
  
  
  
  Dispersion Lesson
  
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  Select activity Prism & dispersion of light
  
  
  
  Prism & dispersion of light Lesson
  
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  Select activity Newton's prism experiment
  
  
  
  Newton's prism experiment Lesson
  
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  Select activity Minimum deviation in prism
  
  
  
  Minimum deviation in prism Lesson
  
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  Select activity Deriving prism formula
  
  
  
  Deriving prism formula Lesson
  
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  Some natural phenomena due to Sunlight
  
  Select activity Scattering of light & Tyndall effect
  
  
  
  Scattering of light & Tyndall effect Lesson
  
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  Select activity Why is the sky blue (and the sun yellow)?
  
  
  
  Why is the sky blue (and the sun yellow)? Lesson
  
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  Select activity Why do stars twinkle (but planets don't)?
  
  
  
  Why do stars twinkle (but planets don't)? Lesson
  
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  Defects of lenses (aberrations of optical Images)
  
  Select activity Diopters, Aberration, and the Human Eye
  
  Diopters, Aberration, and the Human Eye Lesson
  
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  Optical Instruments
  
  Select activity Concave mirror applications
  
  
  
  Concave mirror applications Lesson
  
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  Select activity Simple microscope
  
  
  
  Simple microscope Lesson
  
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  Select activity Simple microscope - max & min power
  
  
  
  Simple microscope - max & min power Lesson
  
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  Select activity Compound microscope
  
  
  
  Compound microscope Lesson
  
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  Select activity Compound microscope Numerical
  
  
  
  Compound microscope Numerical Lesson
  
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  Select activity How telescopes work?
  
  
  
  How telescopes work? Lesson
  
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  Select activity Magnifying power of telescope
  
  
  
  Magnifying power of telescope Lesson
  
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  Select activity Telescope numerical
  
  
  
  Telescope numerical Lesson
  
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Select section 10. Electrostatics

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10. Electrostatics
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  Electric Charges
  
  Select activity Electrostatics (part 1): Introduction to Charge and Coulomb's Law
  
  Electrostatics (part 1): Introduction to Charge and Coulomb's Law Lesson
  
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  Select activity Conservation of Charge
  
  Conservation of Charge Lesson
  
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  Coulomb’s Law
  
  Select activity Coulomb's Law
  
  Coulomb's Law Lesson
  
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  Select activity Unit of charge (Coulombs)
  
  Unit of charge (Coulombs) Lesson
  
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  Electric Field
  
  Select activity Electric field definition
  
  Electric field definition Lesson
  
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  Select activity Electric field direction
  
  Electric field direction Lesson
  
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  Electric Flux
  
  Select activity Electric flux meaning (& how to calculate it)
  
  Electric flux meaning (& how to calculate it) Lesson
  
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  Select activity Area vector with examples & flux vector equation
  
  Area vector with examples & flux vector equation Lesson
  
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  Gauss’s Law
  
  Select activity Gauss law of electricity
  
  
  
  Gauss law of electricity Lesson
  
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  Select activity Gauss law logical proof (any closed surface)
  
  
  
  Gauss law logical proof (any closed surface) Lesson
  
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  Select activity Calculate charge enclosed in a non uniform electric field
  
  
  
  Calculate charge enclosed in a non uniform electric field Lesson
  
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  Select activity Field due to infinite plane of charge (Gauss law application)
  
  
  
  Field due to infinite plane of charge (Gauss law application) Lesson
  
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  Electric Dipole
  
  Select activity Electric dipoles & dipole moments
  
  
  
  Electric dipoles & dipole moments Lesson
  
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  Select activity Electric field due to dipole on the axis
  
  
  
  Electric field due to dipole on the axis Lesson
  
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  Select activity Electric field due to dipole on the equator
  
  
  
  Electric field due to dipole on the equator Lesson
  
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  Select activity Intro to torque on a dipole in uniform electric field
  
  
  
  Intro to torque on a dipole in uniform electric field Lesson
  
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  Select activity Torque on a dipole in electric field (derivation)
  
  
  
  Torque on a dipole in electric field (derivation) Lesson
  
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  Select activity Example: Torque on dipoles in external electric fields
  
  
  
  Example: Torque on dipoles in external electric fields Lesson
  
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  Continuous Charge Distribution
  
  Select activity Charge density & continuous charge distribution
  
  Charge density & continuous charge distribution Lesson
  
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Select section 11. Electric Current Through Conductors

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11. Electric Current Through Conductors
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  Electric Current
  
  Select activity Introduction to charge
  
  Introduction to charge Lesson
  
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  Select activity Intro to current (& Amperes)
  
  Intro to current (& Amperes) Lesson
  
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  Drift speed
  
  Select activity Drift velocity (concept & intuition)
  
  
  
  Drift velocity (concept & intuition) Lesson
  
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  Select activity Drift velocity - formula & derivation
  
  
  
  Drift velocity - formula & derivation Lesson
  
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  Select activity Current from drift velocity (I = neAvd)
  
  
  
  Current from drift velocity (I = neAvd) Lesson
  
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  Select activity Ohm's law - derivation (using drift velocity)
  
  
  
  Ohm's law - derivation (using drift velocity) Lesson
  
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  Ohm’s law
  
  Select activity Introduction to circuits and Ohm's law
  
  
  
  Introduction to circuits and Ohm's law Lesson
  
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  Select activity Solved example: Ohms law
  
  
  
  Solved example: Ohms law Lesson
  
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  Select activity Ohm's law graph (verifying Ohm's law)
  
  
  
  Ohm's law graph (verifying Ohm's law) Lesson
  
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  Select activity Solved example: (Ohm's law graph)
  
  
  
  Solved example: (Ohm's law graph) Lesson
  
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  Select activity Intro to potential difference (& voltage)
  
  
  
  Intro to potential difference (& voltage) Lesson
  
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  Electrical Energy and Power
  
  Select activity Electric power
  
  
  
  Electric power Lesson
  
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  Select activity Solved example: Power dissipated in bulbs
  
  
  
  Solved example: Power dissipated in bulbs Lesson
  
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  Select activity Electric power & energy
  
  
  
  Electric power & energy Lesson
  
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  Resistors
  
  Select activity Series resistors
  
  
  
  Series resistors Lesson
  
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  Select activity Resistors in parallel
  
  
  
  Resistors in parallel Lesson
  
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  Select activity Parallel resistors (part 1)
  
  
  
  Parallel resistors (part 1) Lesson
  
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  Select activity Parallel resistors (part 2)
  
  
  
  Parallel resistors (part 2) Lesson
  
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  Select activity Parallel resistors (part 3)
  
  
  
  Parallel resistors (part 3) Lesson
  
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  Select activity Simplifying resistor networks
  
  
  
  Simplifying resistor networks Lesson
  
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  Select activity Example: Analyzing a more complex resistor circuit
  
  
  
  Example: Analyzing a more complex resistor circuit Lesson
  
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  Select activity Analyzing a resistor circuit with two batteries
  
  
  
  Analyzing a resistor circuit with two batteries Lesson
  
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  Specific Resistance (Resistivity)
  
  Select activity Resistivity and conductivity
  
  Resistivity and conductivity Lesson
  
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  Variation of Resistance with Temperature
  
  Select activity Heating effect of current
  
  Heating effect of current Lesson
  
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  Select activity Solved example - Calculating power & heat dissipated
  
  Solved example - Calculating power & heat dissipated Lesson
  
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  Electromotive Force (emf):
  
  Select activity Cells, EMF, terminal voltage & internal resistance
  
  Cells, EMF, terminal voltage & internal resistance Lesson
  
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  Cells in Series
  
  Select activity Cells in series
  
  Cells in series Lesson
  
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  Cells in parallel
  
  Select activity Cells connected in parallel
  
  Cells connected in parallel Lesson
  
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  Types of Cells
  
  Select activity Cells with internal resistances: Worked example
  
  Cells with internal resistances: Worked example Lesson
  
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Select section 12. Magnetism

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12. Magnetism
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  Introduction
  
  Select activity Introduction to magnetism
  
  Introduction to magnetism Lesson
  
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  Magnetic Lines of Force and Magnetic Field
  
  Select activity Introduction to magnetic fields (Why fields?)
  
  Introduction to magnetic fields (Why fields?) Lesson
  
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  Select activity Magnetic field lines (& their properties)
  
  Magnetic field lines (& their properties) Lesson
  
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  The Bar magnet
  
  Select activity Magnetic dipoles & dipole moment
  
  Magnetic dipoles & dipole moment Lesson
  
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  Gauss' Law of Magnetism
  
  Select activity Gauss's law for Magnetism
  
  Gauss's law for Magnetism Lesson
  
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  Select activity Magnetic fields through solenoids
  
  Magnetic fields through solenoids Lesson
  
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  Earth’s Magnetism
  
  Select activity Magnetic declination - Earth's magnetism
  
  Magnetic declination - Earth's magnetism Lesson
  
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  Select activity Magnetic dip & horizontal component of Earth's field
  
  Magnetic dip & horizontal component of Earth's field Lesson
  
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Select section 13. Electromagnetic Waves and Communication System

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13. Electromagnetic Waves and Communication System
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  Electromagnetic Waves
  
  Select activity Displacement current & Ampere Maxwell's law
  
  
  
  Displacement current & Ampere Maxwell's law Lesson
  
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  Select activity Calculating displacement & conduction current
  
  
  
  Calculating displacement & conduction current Lesson
  
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  Select activity Electromagnetic waves
  
  
  
  Electromagnetic waves Lesson
  
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  Select activity Energy Density
  
  
  
  Energy Density Lesson
  
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  Select activity Momentum of EM waves
  
  
  
  Momentum of EM waves Lesson
  
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  Select activity Deriving speed of light using Maxwell's equations
  
  
  
  Deriving speed of light using Maxwell's equations Lesson
  
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  Electromagnetic Spectrum
  
  Select activity Electromagnetic waves and the electromagnetic spectrum
  
  Electromagnetic waves and the electromagnetic spectrum Lesson
  
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  Propagation of EM Waves
  
  Select activity EM Waves: Production and Propagation
  
  EM Waves: Production and Propagation Lesson
  
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  Select activity Worked example: Propagation of EM waves
  
  Worked example: Propagation of EM waves Lesson
  
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Select section 14. Semiconductors

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14. Semiconductors
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  Introduction
  
  Select activity Introduction to semiconductors
  
  Introduction to semiconductors Lesson
  
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  Electrical conduction in solids
  
  Select activity Conductors, insulators, and semiconductors
  
  Conductors, insulators, and semiconductors Lesson
  
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  Band theory of solids, a brief introduction
  
  Select activity Why atomic theory doesn't work for solids?
  
  Why atomic theory doesn't work for solids? Lesson
  
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  Select activity Band theory of solids
  
  Band theory of solids Lesson
  
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  Intrinsic Semiconductor
  
  Select activity Intrinsic semiconductors
  
  Intrinsic semiconductors Lesson
  
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  Extrinsic Semiconductor
  
  Select activity Generation and recombination in semiconductors
  
  
  
  Generation and recombination in semiconductors Lesson
  
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  Select activity Extrinsic semiconductors N-type
  
  
  
  Extrinsic semiconductors N-type Lesson
  
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  Select activity Extrinsic semiconductors P-type
  
  
  
  Extrinsic semiconductors P-type Lesson
  
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  Select activity Minority charge carriers in extrinsic semiconductors
  
  
  
  Minority charge carriers in extrinsic semiconductors Lesson
  
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  p-n junction
  
  Select activity The PN junction
  
  The PN junction Lesson
  
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  Select activity Diffusion, drift & barrier voltage
  
  Diffusion, drift & barrier voltage Lesson
  
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  A p-n junction diode
  
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  Forward biasing a PN junction Lesson
  
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  Select activity Reverse biasing a PN junction
  
  
  
  Reverse biasing a PN junction Lesson
  
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  Select activity Forward and reverse current mechanism
  
  
  
  Forward and reverse current mechanism Lesson
  
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  Select activity PN diode characteristics
  
  
  
  PN diode characteristics Lesson
  
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  Select activity PN breakdown and avalanche
  
  
  
  PN breakdown and avalanche Lesson
  
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  Applications of semiconductors and p-n junction diode
  
  Select activity Photodiodes - (working & why it's reverse biased)
  
  
  
  Photodiodes - (working & why it's reverse biased) Lesson
  
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  Select activity LED working & advantages
  
  
  
  LED working & advantages Lesson
  
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  Select activity LED - color & fabrication
  
  
  
  LED - color & fabrication Lesson
  
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  Select activity Solar cells - IV characteristics
  
  
  
  Solar cells - IV characteristics Lesson
  
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  Select activity Solar cells - working (and difference from photodiodes)
  
  
  
  Solar cells - working (and difference from photodiodes) Lesson
  
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  Select activity Solar cells - fabrication & material's used
  
  
  
  Solar cells - fabrication & material's used Lesson
  
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  Select activity Transistor working
  
  
  
  Transistor working Lesson
  
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  Select activity Parts of a transistor
  
  
  
  Parts of a transistor Lesson
  
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  Select activity Transistor symbol
  
  
  
  Transistor symbol Lesson
  
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  Select activity Transistor current and parameters
  
  
  
  Transistor current and parameters Lesson
  
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  Select activity Input characteristics of NPN transistor
  
  
  
  Input characteristics of NPN transistor Lesson
  
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  Select activity Output characteristics of NPN transistor
  
  
  
  Output characteristics of NPN transistor Lesson
  
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  Select activity Active, saturation, & cutoff state of NPN transistor
  
  
  
  Active, saturation, & cutoff state of NPN transistor Lesson
  
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  Select activity Transistor as a voltage amplifier
  
  
  
  Transistor as a voltage amplifier Lesson
  
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  Select activity Transistor as a switch
  
  
  
  Transistor as a switch Lesson
  
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