Question

A light ray leaves point a in the figure, reflects from the mirror, and reaches point b. (figure 1)

Answer 1

The law of reflection states that the angle of incidence is equal to the angle of reflection. When light reflects from two mirrors that meet at a right angle, the outgoing ray is parallel to the incoming ray.

Step-by-step explanation:

The law of reflection states that the angle of incidence is equal to the angle of reflection. When light reflects from two mirrors that meet each other at a right angle, the outgoing ray is parallel to the incoming ray. This is illustrated in Figure 1.23, where a ray of light reflects from the back of a water drop and is refracted and dispersed as it enters and leaves the drop.