Question

critical angle for light moving from medium I to medium II is

Answer 1

its answer will be. option B
Bihar board?

Answer 2

According to the circumstances mentioned in the question that, Critical Angle for the light moving from medium 12 medium to is theta.The speed of the light in medium one is 'v'.So speed of the light in the will be:

Option B

:v/ sin theta.

This is the common formula to calculate the critical angle of any light ray which is moving from one medium to the another medium