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A thin equiconvex lens is made of = glas...

A thin equiconvex lens is made of = glass of refractive index 1.5 and its focal length in air is 0.2 m. If it acts as a concave lens of 0.5 m focal length when dipped in a liquid, the velocity of light in the liquid is

A

`1.2xx10^(8)ms^(-1)`

B

`1.6xx10^(8)ms^(-1)`

C

`1.8xx10^(8)ms^(-1)`

D

`2.4xx10^(8)ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
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