Two mirrors meet at right angles. A ray of light is incident on one at an angle of 30° as shown in Fig. 16.19 Draw the reflected ray from the second mirror.

What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray?

How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm?

Boojho stands at A just on the side of a plane mirror as shown in Fig. 16.20 Can he see himself in the mirror? Also, can he see the image of objects situated at P, Q and R?

(a) Find out the position of the image of an object situated at A in the plane mirror (Fig. 16.21).

(b) Can Paheli at B see this image?

(c) Can Boojho at C see this image?

(d) When Paheli moves from B to C, where does the image of A move?