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The refractive index of the material of ...

The refractive index of the material of a concave lens is `n`. It is immersed in a medium of refractive index `n_(1)`. A paprallel beam of light is incident on the lens. Trace the path of emerged rays in each of the following cases :
(a) `n_(1) gt n` (b) `n_(1) lt n` ( c) `n_(1) = n`.

A

B

C

D

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The correct Answer is:
C
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A concave lens made of a material of refractive index n_1 is kept in a medium of refractive index n_2 . A parallel beam of light is incident on the lens. Complete the path of rays of light emerging from the concave lens (i) n_1 gt n_2 (ii) n_1 = n_2 (iii) n_1 lt n_2 .

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