Question

State the rules which govern the propagation of a ray of light when it goes from one transparent medium to another.

Answer 1

law of refraction
which determine the angle of incidence n emergence

Answer 2

The rules which governed the propagation of a ray of light when it goes from one transparent medium to another are as follows:

• The refraction of light takes place. Refraction refers to the bending of light when light travels from one medium to another.

• The reason for refraction is that the speed of light is different in different mediums.

• The rays of light bend toward the normal of the surface if the speed of light is less in the second medium in comparison to the first medium.

• The rays of light bend away from the normal of the surface if the speed of light in the second medium is greater in comparison to the first medium.