Question

A point object P moves towards a convex mirror with a constant speed v, along its optic axis. The speed of the image

• A. is always < v
• B. may be >, = or < v depending on the position of P
• C. increases as P comes closer to the mirror
• D. decreases as P comes closer to the mirror

Answer 1

The correct option is A is always < v

For the convex mirror, as the object moves towards the pole from infinity, the image move from focus to pole.

For the same time interval, distance covered by image is always less than that covered by object.

Therefore speed of image is always $<$object speed $\left(v\right)$