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A thin convex lens of refractive index 1...

A thin convex lens of refractive index 1.5cm has 20cm focal length in air. If the lens in completely immersed in a liquid of refractive index. 1.6, then its focal length will be

A

`-160cm`

B

`-100cm`

C

`+160cm`

D

`+100cm`

Text Solution

Verified by Experts

The correct Answer is:
A
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