A corner cube is formed by three plane mirrors perpendicular to one another resulting in a retroreflector.What is the angle between the directions of an incoming ray of light and of the corresponding outgoing ray of light for this device?
A)90°
B)180°
C)0°
D)360°

Question

Quizplus · Accepted Answer

The angle between the directions of an incoming ray of light and the corresponding outgoing ray of light for a corner cube (retroreflector) is 180°, as the outgoing ray is parallel but opposite in direction to the incoming ray.

A Corner Cube Is Formed by Three Plane Mirrors Perpendicular