What is polarisation of light? Explain polarisation of light by reflection with the suitable diagram and hence derive Brewster's law.

Polarization : A light wave that is vibrating in more than one plane is referred to as unpolarized light.

Polarized light waves are light waves in which the vibrations occur in a single plane.

The process of tiantforming unpolarized light into polarized light is known as polarization.

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It state that the tangent of the polarization angle of incidence of a transparent medium is equal to the refractive index of the medium.