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
$\Rightarrow i_p={\tan }^{-1}n$