Question

A child walks towards a fixed plane mirror at a speed of 5 km $h^{-1}$. The velocity of the image with respect to the mirror is -

• A. 5 km h^–1
• B. – 5 km
• C. 10 km h^–1
• D. – 10 km

Answer 1

The correct option is B: – 5 $km/h$

The velocity of the image will have the same magnitude as that of the velocity of the child. The velocity of the image will have a negative sign to indicate that the image is moving in a direction opposite to that of the child.

Velocity of image = $-5kmh⁻¹$

The image will be moving with a velocity of – 5 km $h^{-1}$ towards the mirror.