Question

# The focal length of a lens of refractive index is . If the lens is immersed in a liquid of refractive index then the focal length of lens is

A
B
C
D
Easy
Updated on : 2022-09-05
Solution
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Correct option is C)

## where, is refractive index of lens material with respect to its surrounding mediumIf lens is immersed in the liquid of refractive index equal to its own then  and hence above equation becomes:

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