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 \[n=\tan \,{{i}_{p}}\] where \[{{i}_{p}}=\] Brewster?s angle \[\Rightarrow \] \[{{i}_{p}}={{\tan }^{-1}}n\]
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