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Aplanoconvex lens is made of material of...

Aplanoconvex lens is made of material of refactive index 1.6 The radius olf curvature of the curred surface is 60 cm. The facal length of the lens is

A

`50 cm`

B

`100 cm`

C

`200 cm`

D

`400 cm`

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The correct Answer is:
B
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