Question

Brewster's angle in terms of refractive index $(n)$ of the medium

• A. $\tan^{-1}\,\sqrt{n} $
• B. $\sin^{-1}\,n $
• C. $\sin^{-1}\,\sqrt{n} $
• D. $\tan^{-1}\,n $

Answer 1

Answer: (D)

Refractive index of a medium $n=\tan i_{p}$
where $i_{p}=$ Brewster's angle
$\Rightarrow i_{p}=\tan ^{-1} n$