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A lens in made of flint (refractive inde...

A lens in made of flint (refractive index= 1.5). When the lens is inmersed in a liquied of refractive index 1.25 the focal length

A

Increases by a factor of 1.25

B

Increases by a factor of 2.5

C

Increases by a f actor of 1.2

D

Decreases by a factor of 1.2

Text Solution

Verified by Experts

The correct Answer is:
B
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