NEETPhysicsGeometrical OpticsMCQ+4 / −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
- Abecome zero
- Bbecome infinite
- Cbecome small, but non-zero
- Dremain unchanged
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Correct answer: B
Where = 1
f =
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