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A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 62.80 diopters, and the lens-to-retina distance is 1.600 centimeter.

(a) Compute how far is the blackboard from her eyes?

(b) If the writing on the blackboard is 5.40 centimeter high, determine the size of the image on her retina?

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