Estimate how far is the blackboard from her eyes

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Reference no: EM13497008

A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 54.56 diopters, and the lens-to-retina distance is 1.864 cm.

(a) How far is the blackboard from her eyes?

(b) If the writing on the blackboard is 5.08 cm high, what is the height of the image on her retina?

Reference no: EM13497008

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