Question

2. How is the critical angle related to the refractive
index of a medium ?​

Answer 1

Answer:

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

The critical angle is related to the refractive index of a medium by the relation

μ= 1/sin ic = cosecic