Question

The angle at which reflected light is totally polarized for reflection from air to glass (refractive index $\mu$) is.

• A. ${\sin }^{-1}\left(\mu \right)$
• B. ${\sin }^{-1}\left(1/\mu \right)$
• C. ${\tan }^{-1}\left(1/\mu \right)$
• D. ${\tan }^{-1}\left(\mu \right)$

Answer 1

The correct option is D ${\tan }^{-1}\left(\mu \right)$

According to Brewster's law , the angle ($\theta$) at which light is totally polarised for reflection from air to glass , is related to refractive index of glass , by following relation ,

$\mu =\tan \theta$

or $\theta ={\tan }^{-1}\left(\mu \right)$