Question

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

(ii) Suppose the lower half of the concave mirror's reflecting surface is covered with an opaque material. What effect this will have on the image of the object ? Explain.

Answer 1

(i)

Reason : The mobile phone has many rectangles that are at different positions with different distances from the mirror. As there are different object distances, so their images and magnification are different.

(ii) Only intensity will reduce.