A light ray is reflected by two mirrors that are perpendicular. The new direction of the ray is
A)180° from the original direction.
B)135° from the original direction.
C)45° from the original direction.
D)between 90° and 180° from the original direction.
E)90° from the original direction.

Question

Quizplus · Accepted Answer

When a light ray reflects off two perpendicular mirrors, it undergoes two reflections, each changing its direction by 90°. This results in a total change of 180°, making the new direction opposite to the original direction.

A Light Ray Is Reflected by Two Mirrors That Are