Question

A mobile phone lies along the principal axis of a concave mirror. Show with the help of suitable diagram, the formation of its image. Explain why magnification is not a uniform?

Answer 1

The formation of image of the mobile phone by the concave mirror is as shown in above figure.

Magnification is not a uniform because:

(i) The part of mobile at the center of the curvature will form image of the same size.

(ii) The part that lies between F and C will form an enlarged image beyond C .

(iii) The image of the mobile phone is highly magnified.

Thus the different parts of the mobile phone are magnified in different proportions because of their different locations from the concave mirror. That is why the image is distorted.