Questions
A man can see only between 75 cm and 200 cm. The power of lens to correct the near point will be
a
+83D
b
+ 3 D
c
– 3 D
d
-83D
detailed solution
Correct option is A
For improving near point, convex lens is required and for this convex lensu=−25cm, v=−75cm ∴1f=1−75−1−25⇒f=752cm So power P=100f=10075/2=+83DTalk to our academic expert!
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