Question

A boy runs towards a convex mirror with a speed v. His image is seen to move towards the mirror at a speed $v^1$. Then,

• A. $v<v^1$
• B. $v>v^1$
• C. $v=v^1$
• D. Nothing can be said as data are insufficient,

Answer 1

Answer: (B)

$v>v^1$

Answer is B.

In a convex mirror, the image distance is smaller than the object distance. That is, when an object moves towards the convex mirror, the image appears to move closer at a faster rate.
Hence, the speed of the approaching object is faster than the speed of the approaching image. That is, $v>v^{{}^{\prime }}$.