Question

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
1). Become zero
2). Become infinite
3). Become small, but not zero
4). Remain unchanged.

Answer 1

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ur ans is may be ......


2) become infinite .....


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Answer 2

Answer:

become infinite...

Explanation:

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