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NEET 2018 Physics and Chemistry

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Question : 16

Total: 90

The refractive index of the material of a prism is √2 and the angle of the prism is 30°. One of the two refracting surfaces of the prism is made a mirror inwards, by silver coating. A beam 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

60°
45°
zero
30°

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