Problem: An eyeglass prescription is for a lens with +2.5 diopters. The lens is 2 cm in front of the eye. With glasses on, the person's near-point is 25 cm. What is the person's near point when not wearing the glasses?

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An eyeglass prescription is for a lens with +2.5 diopters. The lens is 2 cm in front of the eye. With glasses on, the person's near-point is 25 cm. What is the person's near point when not wearing the glasses?

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