A poing object moves along the principal axis of a convex lens of focal length f such that its real image, also formed on the principal axis at a distance (4f)/3 (at t=0) moves away from the lens with uniform velocity alpha. Find the velocity of the point object as a function of time t.

A poing object moves along the principal axis of a convex lens of foca

1.	A poing object moves along the principal axis of a convex lens of focal length f such that its real image, also formed on the principal axis at a distance (4f)/3 (at t=0) moves away from the lens with uniform velocity alpha. Find the velocity of the point object as a function of time t.
Answer» `(F/(f+alphat))^(2)ALPHA` `((alpha)/(f+alphat))^(2)` `((f//3+alphat^(2))/f)^(2)alpha` `(f/(f/3+alphat))^(2)alpha` ANSWER :D

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A poing object moves along the principal axis of a convex lens of focal length f such that its real image, also formed on the principal axis at a distance (4f)/3 (at t=0) moves away from the lens with uniform velocity alpha. Find the velocity of the point object as a function of time t.

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