through a converging lens of A stationary observer looking

Last updated: 6/10/2023

through a converging lens of A stationary observer looking at a fish F in water of focal length 90 0 cm The lens is allowed to fall freely from a height 62 0 cm with its axis vertica The fish and the observer are on the principal axis of the lens The fish moves up with constant velocity 100 cm s Initially it was at a depth of 44 0 cm if the velocity with which the fish appears to move to the observer at t 0 2 sec is g 10 m s A B C 91 4 95 4 99 4 ms 1 ms 1 ms 1 Lens water 62 cm 44 cm