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A convex lens is dipped in a liquid whos...

A convex lens is dipped in a liquid whose refractive index is equal to the refractive of the lens. Then its focal length will

A

become zero

B

become infinite

C

remain small, but non-zero

D

remain unchanged

Text Solution

Verified by Experts

The correct Answer is:
B
When refractive index of lens is equal to the refractive index of liquid, the lens behave like a plane surface with focal length infinity.
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