When a wave or light ray moves from one medium to another its speed changes. The direction of the ray may also change. This property of waves is called refraction and commonly occurs with light rays.

Light changes speed as it passes from one medium to another. This is called refraction. The frequency of light does not change as it refracts. The refractive index of a material is a measure of ...

In the tank, from top to bottom, the index of refraction is increasing, as in a mirage from the ground up. Shine the laser pointer horizontally across the top, then horizontally across the middle and ...

Get: NCERT Class 10 Lab Manuals PDF Below are some examples of competency-based questions from Chapter 9, focusing on Light – ...