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The radius of curvature of each surface ...

The radius of curvature of each surface of a biconcave lens made up of glass of refrative indx `1.5` is 30 cm. the focal length of the lens is

A

60 cm

B

30 cm

C

`-30 cm`

D

`-60 cm`

Text Solution

Verified by Experts

The correct Answer is:
C
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