Question

You are provided with (a) plane mirror (b) concave mirror (c) convex mirror. How will you distinguish them without touching?

Answer 1

The classification can be done based on the images formed by different types of mirrors:
(i) Plane mirror : The image formed by a plane mirror is virtual and upright. The size of the image will be the same as that of the object.

(ii) Concave mirror : The image formed by a concave mirror will always be real. Its size will be either enlarged or diminished. Only when the object is very close to the mirror will the image be virtual.

(iii) Convex mirror : The image formed by a convex mirror will be virtual and upright, but diminished.

By observing the image formed by each mirror, the type of the mirror can be determined.