The separation between point object P and the thin convex lens is 40 cm initially at a time t 0 At t 0 the object and lens

Question

The separation between point object P and the thin convex lens is 40 cm initially at a time t 0 At t 0 the object and lens starts motion with constant velocities 2 cm and 4 cm s respectively towards right Then the speed of image formed by the lens a a time t 10 s is P 2cm s 40 cm f 20 cm 4cm s

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