A person has a far-point of 21 m and a near-point of 70 cm. Assume a distance of 2.3 cm between the lens and retina. (a)

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answerhappygod
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A person has a far-point of 21 m and a near-point of 70 cm. Assume a distance of 2.3 cm between the lens and retina. (a)

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A person has a far-point of 21 m and a near-point of
70 cm. Assume a distance of 2.3 cm between the lens and
retina.
(a) Determine the difference between the maximum and
minimum refractive powers of the eye. Give your answer as a
positive value.
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