PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
A plane mirror is initially at rest. Keeping the incident beam fixed, the mirror is first rotated 5∘ clockwise and then 7∘ anticlockwise about the same axis. By what net angle and in which sense does the final reflected ray deviate from its original direction?
(a) 4∘ clockwise
(b) 4∘ anticlockwise
(c) 24∘ clockwise
(d) 2∘ anticlockwise