Light is incident at an angle $i$ on a glass slab. The reflected ray is completely polarised. The angle of refraction is

The angle of incidence at which reflected light is totally polarized for reflection from air to glass (refractive index $n$) is

$A$ ray of unpolarised light is incident on a glass surface of refractive index $1.73$ at the polarizing angle. The angle of refraction will be. [Take $\tan 60^{\circ} = 1.73$] (in $^{\circ}$)

When unpolarised light from air is incident on the surface of a medium of refractive index $\sqrt{3}$, the reflected light is totally polarised. The angle of refraction is (in $^{\circ}$)

The polarising angle for a transparent medium is $\theta$,and $v$ is the speed of light in that medium. Then the relation between $\theta$ and $v$ is (where $c$ is the velocity of light in air).

The polarising angle of a transparent medium is $\theta$. Let the speed of light in the medium be $v$. Then the relation between $\theta$ and $v$ is [where $c$ is the velocity of light in air].