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A plano-convex lens has focal length of...

A plano-convex lens has focal length of 20 cm. the radius of its spherical suface is `(""_(a) mu_(g)=1.5)`

A

20 cm

B

15 cm

C

10 cm

D

`7.5 cm`

Text Solution

Verified by Experts

The correct Answer is:
C
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