Questions
A person with a defective sight is using a lens having a power of +2D. The lens he is using is
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a
Concave lens of focal length 0.5m
b
Convex lens of focal length 2.0m
c
Concave lens with focal length 2.0 m
d
Convex lens with focal length 0.5m
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Correct option is D
f(in m)=1D=12mSimilar Questions
A man can see only between 75 cm and 200 cm. The power of lens to correct the near point will be
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