A ray of light is incident at an angle on a surface of a prism of small angle and…

PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

A ray of light is incident at an angle

i

on a surface of a prism of small angle

A

and emerges normally from the opposite surface. If the refractive index of the material of the prism is

\mu

, the angle of incidence

i

is nearly equal to: (a)

A/\mu

(b)

A/(2\mu)

(c)

\mu A

(d)

\mu A/2