Q.

A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is

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a

Between unity and 1.33

b

Greater than 1.33

c

Equal to 1.33

d

Equal to unity

answer is C.

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Detailed Solution

μair <μiers <μwater  i.e., 1<μeens <1.33

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A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is