A convex lens is dipped in a liquid whose refractive index is equal to – McqOptions

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1.	A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens. Then its focal length will [CBSE PMT 2003]
A.	Become infinite
B.	Become small, but non?zero
C.	Remain unchanged
D.	Become zero
Answer» B. Become small, but non?zero

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