State and explain the laws of refraction of light?
Meaning of refraction of light:
1. Bending of light rays when it passes from one medium to another medium with different optical densities.
2. It can also be defined as the change in direction of a light wave when it passes from one medium to another.
Laws of refraction:
1. The incident ray, the normal ray, and the refracted ray lie in the same plane at the point of incidence.
As it can be clearly seen from the diagram the incident ray, the normal ray, and the refracted ray lie in the same plane at the point of incidence.
2. Snell's law: