Q 12-10-042JEE MainJEE Main 2026 (24 Jan, Shift 1)Easy
An unpolarised light is incident at an interface of two dielectric media having refractive indices of 2 (incident medium) and $2\sqrt3$ (medium) respectively. To satisfy the condition that reflected and refracted rays are perpendicular to each other, the angle of incidence is ______
Answer: (B) $60^\circ$
Reflected and refracted rays are perpendicular at the Brewster angle:
$$\tan i_B = \frac{n_2}{n_1} = \frac{2\sqrt3}{2} = \sqrt3\Rightarrow i_B = 60^\circ$$
Solution by Sreeraj P, M.Sc Physics