A slide projector with a single lens is used to project an image onto a wall 0.560m away with a magnification of -11.7. What is the focal length of the lens? Give your answer in centimeters
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A slide projector with a single lens is used to project an image onto a wall 0.560m away with a magnification of -11.7. What is the focal length of the lens? Give your answer in centimeters.
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