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+1 vote
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in Physics by (121k points)
A thin equi-convex lens is made of glass of refractive index `1.5` and its length is `0.2 m.` If it acts as a concave lens of `0.5 m` focal length when dipped in a liquid, the refractive index of the liquid is
A. `17/8`
B. `15/8`
C. `13/8`
D. `9/8`

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1 Answer

0 votes
by (121k points)
Correct Answer - b

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