Lens dilemma

Classical Mechanics Level 3

The distance between object and screen is D.Real images of an object are formed for two positions of a lens separated by a distance d.What is the ratio between the sizes of two images?

D d \dfrac{D}{d} D d \dfrac{\sqrt{D}}{\sqrt{d}} ( D − d ) 2 ( D + d ) 2 \dfrac{(D-d)^2}{(D+d)^2} D − d D + d \dfrac{D-d}{D+d}

Saksham Jain by Saksham Jain , 17, India

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