Optics Problems: Refractive Power
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A student is reading a lecture written on a blackboard. The lenses in her eyes have refractive power of 57.50 diopters, and the lens-to-retina distance 1.750 cm. (a) How far (in meters) is the blackboard from her eyes? (b) If the writing on the blackboard is 5.00 cm high, what is the size of the image on her retina?
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