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 accleration.
(c) moves away from the lens with a non-uniform acceleration.
(d) moves towards the lens with a non-uniform acceleration