What is the law of refraction in terms of angles `i` and `r`?

What is the unit of refractive index?

The refractive index of a material is sqrt3 . What is the angle of refraction if the unpolarised light is incident on it at the polarising angle of the medium.

What is the value of refractive index of a medium of polarising angle 60^@ ?

Draw a ray diagram to show the refraction of light through a glass prism. Hence obtain the relation for the angle of deviation in terms of the angle of incidence, angle of emergence and the angle of the prism.

What is the value of refractive index of a medium of polarising angle 60^@ ? (mu = sqrt3 = 1.732) .