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

Answer 1

Answer on Question #48722, Physics, Optics

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

Solution:

If a plane mirror is rotated in the plane of incidence through angle $\theta$ , by keeping the incident ray fixed, the reflected ray turned through an angle $2\theta$ .

Answer: 2θ.

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