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Calculate the power of lens of the spect...

Calculate the power of lens of the spectacles necessary to rectify the defect of nearsightedeness fof a person who could see clearly only up to a distance of 1.8 m.

Text Solution

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The maximum distance the person could seed is, x = 1.8 m
The lens should have a focal length of f = - x m = - 1.8 m
it is a concave or diverging lens.
The power of the lens is, `P = (1)/(1.8m)` = 0.56 diopter
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