At what angle of incidence,the light reflected from a glass slab will become completely polarised,if the angle of refraction at that incident angle is $33.6^{\circ}$ (in $^{\circ}$)?

$A$ beam of light $AO$ is incident on a glass slab $(\mu = 1.54)$ in a direction as shown in the figure. The reflected ray $OB$ is passed through a Nicol prism. On viewing through the rotating Nicol prism,we find that $(\tan 57^{\circ} = 1.54)$.

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).

Can reflection result in plane polarised light if the light is incident on the interface from the side with higher refractive index?

The refractive index of a material is equal to the tangent of the polarising angle. This is called:

The critical angle of a certain medium is ${\sin ^{ - 1}}\left( {\frac{3}{5}} \right)$. The polarization angle is