A) \[{{\tan }^{-1}}\sqrt{n}\]
B) \[{{\sin }^{-1}}n\]
C) \[{{\sin }^{-1}}\sqrt{n}\]
D) \[{{\tan }^{-1}}n\]
Correct Answer: D
Solution :
Refractive index of a medium\[n=tan\text{ }{{i}_{p}}\]where\[{{i}_{p}}=\]Brewsters angle\[{{i}_{p}}=ta{{n}^{-1}}n\]
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