Physics · 2014
NEET 2014 · 4 May · Code P · Q38
The angle of a prism is 'A'. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence 2A on the first surface returns…
The angle of a prism is 'A'. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence 2A on the first surface returns back through the same path after suffering reflection at the silvered surface. The refractive index $\displaystyle \mu$, of the prism is :
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle 2 \cos \mathrm{~A}$
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NEET (UG) 2014 Physics question, with the answer from NTA’s final answer key. Where our answers come from.