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A thin glass (refractive index 1.5) lens...

A thin glass (refractive index `1.5`) lens has optical power of `-8D` in air, its optical power in a liquid medium with refractive index `1.6` will be

A

25D

B

1D

C

`-25D`

D

`-1D`

Text Solution

Verified by Experts

The correct Answer is:
B
`f_(med)/(f_(air))=P_(air)/P_(med)=(mu_(l ens)-1)/(mu_(l ens)/mu_(liq)-1)`
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