Physics · 2018
NEET 2018 · 6 May · Code AA · Q19
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…
The refractive index of the material of a prism is $\displaystyle \sqrt{2}$ and the angle of the prism is $\displaystyle 30^{\circ}$. 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
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle 45$°
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NEET (UG) 2018 Physics question, with the answer from NTA’s final answer key. Where our answers come from.