Chapter 2. Light

Light- Refraction Basics * The tendency of light to bend at the point of separation of two media is called refraction. * The ratio of velocity of light in the first medium to that in the second medium is known as the refractive index of the second medium with respect to the first medium. * ... Read more

Chapter 1. Force Work Power and Energy

Motion- Graphical Representative of Motion * Motion can be represented using a line graph comparing dependent quantities and a common independent quantity. * Time is always taken as the independent variable in graphical representation if motion. * A distance - time graph represents the change in the position of an object with the time. * ... Read more