Question

14. Two plane mirrors are placed at 90° to each other. A
ray of light strikes one mirror and follows the path
as shown in the figure. What is the value of 0


A20-
B60

C
30°
D. 50°​

Answer 1

Answer:

answer will be 45 degree

Answer 2

The angle of incidence at horizontal mirror is (90−θ).

Explanation:

Question statement:

Two plane mirrors are placed perpendicular to each other. A ray strikes one mirror and, after reflection, falls on the second mirror. The ray, after reflection from the second mirror, will emerge?

The coming ray strikes the vertical mirror and makes an angle of incidence θ. The angle of incidence at horizontal mirror is (90−θ), and is obtained by joining the perpendiculars of the mirrors.

Reflected ray reflects from horizontal mirror and makes an angle θ with the horizontal mirror and vice versa.

Reflected ray is parallel to the original ray.