A laser beam strikes a plane's reflecting surface with an angle of incidence of 43°. What is the angle between the incident ray and the reflected ray?
A) 43°
B) 86°
C) 45°
D) 90°
E) 0°

Question

Quizplus · Accepted Answer

According to the law of reflection, the angle of incidence is equal to the angle of reflection. So, the angle between the incident ray and the reflected ray is twice the angle of incidence, which is 2 x 43° = 86°. Therefore, the correct answer is B.

A Laser Beam Strikes a Plane's Reflecting Surface with an Angle