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If the image of the pen is the same size as the pen when placed in front of a convex lens, then it is at the focal point of the lens. The power of the lens in diopters is given by the formula: ( P = \frac{1}{f} ), where ( f ) is the focal length of the lens in meters. With the image distance being equal to the focal length, the power of the lens will be 1 diopter.

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1y ago

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