A glass prism `(mu = 1.5)`  is dipped in water `(mu = 4//3)`  as shown in figure. A light ray is
Channel: Doubtnut
Date: 2021-11-02

A glass prism `(mu = 1.5)`  is dipped in water `(mu = 4//3)`  as shown in figure. A light ray is incident normally on the surface AB . It reaches the surface BC after totally reflected, if