An object approaches a convergent lens from the left of the lens with a uniform speed 5 m/s and stops at the focus. The image

Options

A. moves away from the lens with an uniform speed 5 m`//`s.
B. moves away from the lens with an uniform acclcration.
C. moves away from the lens with a non uniform acceleration,
D. moves towards the lens with a non-uniform acceleration.

Answer

A, C

Explanation

When any object moves towards convergin lens (convex lens or positive lens) with constant speed, its image will move away froi the lens with non-uniform acceleration becaus for a lens, relation between object distance an image distance is not linear.