WEBVTT
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This is College Physics
Answers with Shaun Dychko.
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The power of the lens in the eye will be
the reciprocal of the object distance
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plus the reciprocal of the image distance.
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So, the image distance is
the lens retina distance,
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which we're told is two centimeters
for all the problems in this chapter.
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So, we have one over two centimeters written
as times ten to the minus two meters.
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Then, we add that to the
reciprocal of the object distance,
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which is one over 50 times
ten to the minus two meters.
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And, these units have to be meters in order
for power to be in units of diopters.
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And so, this ends up being 52.0
diopters is the power of the eye.