Geometrical OpticsHard
Question
The refractive index of the material of a prism is and the angle of the prism is 30°. One of the two refracting surfaces of the prism is made a mirror inwards , by silver coat ing. A b eam of monochromatic light entering the prism from the other face will retrace its path (after reflection from the silvered surface) if its angle of incidence on the prism is
Options
A.
60°
B.
45°
C.
30°
D.
zero
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