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 θ, the reflected light will deviate from its original path by the angle

• A. $2 \theta$
• B.
• C. $\theta$
• D. $4 \theta$

Answer 1

Answer: (A)

$2 \theta$

Answer 2

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