the near point of hypermetropic person is 75 cm from the eyes.what is the power of the reqired to enable him to read clearly abook held at 25cm from the eye
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1/f=1/v-1/u
1/f=1/25-1/75
=-1/50
f=37.03m
P=1/f=2.7D
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The near point of a person suffering from hypermetropia is 75 cm . calculat
The near point of a person suffering from hypermetropia is 75 cm . calculate the focal length and power of the lens required to enable him to read the newspaper which is kept at 25 cm from the eye.
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1/f=1/v-1/u
1/f=1/25-1/75
=-1/50
f=37.03m
P=1/f=2.7D
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