Ray Optics And Optical Instruments

Physics
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A ray monochromatic light is incident on the face of prism near vertex at an incident angle of (see figure). If the refractive index of the material of the prism is , which of the following is (are) correct?

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 90
D
The angle between the incident ray and the emergent ray is 120
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Monochromatic light is incident on a glass prism of angle A. If the refractive index of the material of the prism is , a ray incident at an angle , on the face AB would get transmitted through the face AC of the prism provided

A
B
C
D
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