the far point of a myopic person is 80cm Infront of eye what is the nature and power of lens required to correct the problem
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the far point of a myopic person is 80cm Infront of eye what is the nature and power of lens required to correct the problem
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Answer:
The person is suffering from myopia and hence need a concave lens to correct the defect. The lens should be such that an object at infinity must form its image at the far point.
Hence, f=−80 cm=−0.8 m
The power of the lens can be obtained as:
P= 1/f
P= 1/ (0.8)
=-1.25 D
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