A boy uses spectacles of focal leanght -60cm .Name the defect of vision he is suffering
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1
Answer:
As the focal length is negative the lens used by him is a concave lens.
Concave lens is used to correct myopia.
Therefore the boy is suffering from myopia
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2
Since the focal length is negative,
Then he should use a concave lens.
Therefore he is suffering from myopia.
Then he should use a concave lens.
Therefore he is suffering from myopia.
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