Question

when light is travelling from one medium to another medium what its change​

Answer 1

Although the speed changes and wavelength changes, the frequency of the light will be constant. The frequency, wavelength, and speed are related by: The change in speed that occurs when light passes from one medium to another is responsible for the bending of light, or refraction, that takes place at an interface.

Answer 2

Answer:

the direction of light is changed ....

thicker medium to thick medium -----the ray goes distant

thick to thicker medium ------the ray comes nearer......