Question

A ray of light is incident on a plane mirror making an angle of 90° with the mirror surface. The angle of reflection for this ray of light will be:

(a) 45°
(b) 90°
(c) 0°
(d) 60°

Answer 1

(c) 0^o, since angle of incidence = 0^o .
According to the first law of reflection, the angle of incidence is equal to the angle of reflection.