What is an unpolarised ligth ?Explain with the help of a suitable ray diagram,how an unpolarised light can be polarised by reflection from a transparent medium.Write the expression for Brewster angle in terms of the refractive index of the denser medium.

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

Describe briefly,with the help of suitable diagram,how the transverse natrure of light can be demonstrated by the phenomenon of polarisation.

What is normal shift?Explain.Obtain he expression for normal shift .Indicate,how this helps to determine refractie index of a medium.

A beam of unpolarised ligth is incident on a glass-air interface. Showing a suitable ray diagram,that light reflected from the interface is totally polarised,when mu=tan i_B ,Where mu is the refractive index of glass with respect to air and i_B is the Brewster's angle.

What is polarisation of light? Explain polarisation of light by reflecting with the suitable diagram and hence derive Brewter's Law.

This angle of incidence at which relfeted ligth is totally polarised for reflection from air to glass(refractive index mu ),is:

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 sqrt3 . What is the angle of refraction if the unpolarised light is incident on it at the polarising angle of the medium.

State Brewster's law. Obtain the relation between the Brewster angle and refractive index for medium which produces Plane Polarized light.