Rays of light fall on the plane surface of a half cylinder at an angle `45^@` in the plane
Channel: Doubtnut
Date: 05/07/2020

Rays of light fall on the plane surface of a half cylinder at an angle `45^@` in the plane perpendicular to the axis (see figure). Refractive index of glass is `sqrt2.` Discuss the condition that the rays do not suffer total internal reflection.