Question

Define critical angle. Establish its relationship with refractive index
of the medium.​

Answer 1

Explanation:

The ratio of velocities of a light ray in the air to the given medium is a refractive index. ... Thus, the relation between the critical angle and refractive index can be established as the Critical angle is inversely proportional to the refractive index.

Answer 2

Hey dude find the answer in the image below.