Question

A ray of light incidents on a plane mirror at an angle of $30{^\circ}.$ The deviation produced in the ray is

• A. $30{^\circ}$
• B. $60{^\circ}$
• C. $90{^\circ}$
• D. $120{^\circ}$

Answer 1

Answer: (D)

$120{^\circ}$

Answer 2

$\delta = 180{^\circ} - 60{^\circ} = 120{^\circ}$