Q. 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) $4\theta$
Explanation
(a) When a mirror is rotated by an angle $\theta$, the reflected ray deviates from its original path by angle $2\theta$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.