Angle of incidence is equal to the angle of reflection.

(a) Always

(b) Sometimes

(c) Under special conditions

(d) Never

Describe an activity to show that the incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.

Fill in the blanks in the following.

(a) A person 1 m in front of a plane mirror seems to be ___________ m away from his image.

(b) If you touch your ear with your right hand in front of a plane mirror, it will be seen in the mirror that your right ear is touched with your ___________.

(c) The size of the pupil becomes ___________ when you see in dim light.

(d) Night birds have ___________ cones than rods in their eyes.

Image formed by a plane mirror is

(a) virtual, behind the mirror and enlarged.

(b) virtual, behind the mirror and of the same size as the object.

(c) real at the surface of the mirror and enlarged.

(d) real, behind the mirror and of the same size as the object.

Describe the construction of a kaleidoscope.