Question

The velocity of light in a medium is half its velocity in air. If ray of light emerges from such a medium into air, the angle of incidence, at which it will be totally internally reflected is,
A) 15°
B) 30°
C) 45°
D) 60°

Answer 1

It will be reflected on 15 degree.

Answer 2

Answer:

Explanation:

V=c/2

Sinic=1/n

n=c/v

n=2

ic=sin(1/2)

Ic=30