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A point object O is placed on the principal axis of a convex lens of focal length f = 20 cm. at a distance of 40 cm. to the left of it. The diameter of the lens is 10 cm. An eye is placed 60 cm. to right of the lens and a distance h below the principal axis. The maximum value of h to see the image is: A.) 0 B.) 2.5 cm. C.) 5 cm. D.) 10 cm. The answer is given as B.) 2.5 cm. Please solve the problem giving all the steps.

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