Light is incident on a glass surface at polarising angle of $57.5^{0}$. Then the angle between the i

Question

Light is incident on a glass surface at polarising angle of $57.5^{0}$. Then the angle between the incident ray and the refracted ray is\

Professor PC Thomas Classes · Answer

c)When a light is incident at polarising angle, the reflected and refracted are perpendicular to each other as shown in the figure.\  Where $i_{p}$ is the angle of incidence $r$ is the angle of reflection, $r^{\prime}$ is the angle of refraction. Given: $\mathrm{i}_{\mathrm{p}}=57.5^{\circ}$\ Let $	heta$ be the angle between the incident ray and the refracted ray.\ From figure:\ $	heta=\mathrm{i}_{\mathrm{p}}+\mathrm{r}+90^{\circ}=2 \mathrm{i}_{\mathrm{p}}+90^{\circ}=2 	imes 57.5^{\circ}+90^{\circ}=205^{\circ}$\ $\left[ight.$ since $\left.\mathrm{i}_{\mathrm{p}}=\mathrm{r}ight]$\