Anna holds a 12 D magnifier directly in front of her eye to get a close look at a 19-mm-diameter penny. What is the closest possible distance that she can hold the coin to have it appear in focus? At this distance, how large does the image of the coin appear on her retina? (Assume a typical 25 cm near point and a distance of 1.7 cm between the lens and the retina.)

Anna holds a 12 D magnifier directly in front of her eye to get a close look at a 19-mm-diameter penny. What is the closest possible distance that she can hold the coin to have it appear in focus? At this distance, how large does the image of the coin appear on her retina? (Assume a typical 25 cm near point and a distance of 1.7 cm between the lens and the retina.)

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