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# A ray OP of monochromatic light is incident on the face AB of prism ABCD near vertex B at an incident angle of 60∘ (see figure). If the refractive index of the material of the prism is √3, which of the following is (are) correct?The ray gets totally internally reflected at face CDThe ray comes out through face ADThe angle between the incident ray and the emergent ray is 90∘The angle between the incident ray and the emergent ray is 120∘

A
The ray gets totally internally reflected at face CD
B
The ray comes out through face AD
C
The angle between the incident ray and the emergent ray is 120
D
The angle between the incident ray and the emergent ray is 90
Solution
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#### Using Snell's law, sin−11√3<sin−11√2Net deviation is 90∘.

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