Question

A man run at a speed of 15 m/s. What is the speed of his image with respect to the plane mirror placed in front of him?

• A. 7 . 5 m/s
• B. 15 m/s
• C. 30 m/s
• D. 45 m/s

Answer 1

The correct option is B 15 m/s

Given,

Speed of object toward mirror is $15m{s}^{-1}$

From the diagram,

Normal speed of image toward the mirror is equal to normal speed of object.

Hence, speed of object is $15m{s}^{-1}$