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A thin convex lens of refractive index 1.5 is placed in a liquid with refractive index 2.0. The power of the lens in air is 10 D.

+1 vote
in JEE by kratos

A thin convex lens of refractive index 1.5 is placed in a liquid with refractive index 2.0. The power of the lens in air is 10 D. Then in the liquid its power will be

(a) 20 D

(b) 10 D

(c) – 10 D

(d) – 5 D

1 Answer

+3 votes
by kratos
 
Best answer

Correct option (d) – 5 D

Explanation:

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