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

Explain how you can take care of your eyes.

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

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.

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?