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What is the focal length of double conve...

What is the focal length of double convex lens for which radius of curvature of either of the surfaces is 30 cm? `[ ""_(a) mu_(g)=1.5]`

A

50 cm

B

30 cm

C

`-30 cm`

D

`-50 cm`

Text Solution

Verified by Experts

The correct Answer is:
B
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