Ray Optics And Optical Instruments

Physics
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Assertion

The moon appears purely white during the day but after sunset its colour is yellowish hue.

Reason

The scattered blue component of white light is mixed with yellow, the colour becomes white.

A
Assertion is True. Reason is also True and is the correct explanation of the Assertion.
B
Assertion is True. Reason is also True but is not the correct explanation of Assertion.
C
Assertion is True and Reason is False
D
Assertion is False and Reason is True
Hard
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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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