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March 25, 2017

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When a converging lens is used in a camera (as in the first drawing), the film must be placed at a distance of 0.240 m from the lens to record an image of an object that is 4.30 m from the lens. The same lens is then used in a projector (as in the second drawing), with the screen 0.560 m from the lens. How far from the projector lens should the film be placed?

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