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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 infinite

B

Become small, but non–zero

C

Remain unchanged

D

Become zero

Text Solution

Verified by Experts

The correct Answer is:
A
If `(n)_("liquid") = (n)_("lens")` then lens behave as plane glass slab, `f = infty `,
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