Question

A ray of light strikes a plane mirror PQ at an angle of incidence of 30°, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is:; A) 30°; B) 45°; C) 60°; D) 90°

Answer 1

Answer:

The angle of reflection is always equal to the angle of incidence

Explanation:

Angle i = angle r

Therefore anhle of reflection is of 30degree