Q 12-10-024NEETJEE MainMedium
The refractive index of glass is $\sqrt{3}$. The angle of refraction when light is incident on it at the polarising angle is
Answer: (A) $30°$
Concept. At the polarising angle $\tan i_p = n$ and the reflected and refracted rays are perpendicular, so $r = 90° - i_p$.
Step 1. Polarising angle. $\tan i_p = \sqrt3 \Rightarrow i_p = 60°$.
Step 2. Refraction. $r = 30°$.
Answer. $30°$ (Option A).
Solution by Sreeraj P, M.Sc Physics