Q 12-10-001NEETNEET 2025Top questionEasy
An unpolarized light beam travelling in air is incident on a medium of refractive index $1.73$ at Brewster's angle. Then-
Answer: (A) reflected light is completely polarized and the angle of reflection is close to $60°$
Brewster's law: $\tan i_B = n = 1.73 \approx \sqrt{3}$, so $i_B = 60°$. The angle of reflection equals the angle of incidence, $60°$.
At Brewster's angle the reflected light is completely (plane) polarized, while the transmitted light is only partially polarized. The angle of refraction is $90° - 60° = 30°$, but the transmitted light is not completely polarized.
So the correct statement is (1).
Solution by Sreeraj P, M.Sc Physics