3
Question
A far point person suffering from myopia is 2m from the eye. Find the the focal length and power of corrective lens that will correct his vision.
A far point person suffering from myopia is 2m from the eye. Find the the focal length and power of corrective lens that will correct his vision.
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Solution
Given,
Distance of far point x = 2 m
Focal length of the corrective lens to view distant objects correctly f = -x
= -2 m Ans.
Power of the lens P = 1/f
= 1/(-2)
= -0.5 D Ans.
Distance of far point x = 2 m
Focal length of the corrective lens to view distant objects correctly f = -x
= -2 m Ans.
Power of the lens P = 1/f
= 1/(-2)
= -0.5 D Ans.
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