The refractive index of a material is. What is the angle of refraction if the unpolarised light is incident on it at the polarising angle of the medium?
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From Brewster's law,
polarising angle $\text{i}_\text{B}=\tan^{-1}\text{(n)}=\tan^{-1}\sqrt3=60^\circ$
Also $\text{i}_\text{B}+\text{r}=90^\circ$
$\therefore$ Angle of refrection $=90^\circ-\text{i}_\text{B}=90^\circ-60^\circ=30^\circ.$
polarising angle $\text{i}_\text{B}=\tan^{-1}\text{(n)}=\tan^{-1}\sqrt3=60^\circ$
Also $\text{i}_\text{B}+\text{r}=90^\circ$
$\therefore$ Angle of refrection $=90^\circ-\text{i}_\text{B}=90^\circ-60^\circ=30^\circ.$
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