Question

A light beam is being reflected by using two mirrors, as in a periscope used in submarines. If one of the mirrors rotates by an angle $\theta ,$ the reflected light will deviate from its original path by the angle:-

• A. $2\theta$
• B. $0^{\circ }$
• C. $\theta$
• D. $4\theta$

Answer 1

The correct option is A $2\theta$

When a mirror is rotated by an angle $\theta ,$ the reflected ray deviate from its original path by angle $2\theta$.