how is linearly polarised light obtained by the process of scattering of light ? find the brewster angle for air glass interface, when the refractive index of glass = 15.
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Brewster's angle (also known as the polarization angle) is an angle of incidence at which light with a particular polarization is perfectly transmitted through a transparent dielectric surface, with no reflection. When unpolarized light is incident at this angle, the light that is reflected from the surface is therefore perfectly polarized.
Tan ib = n2/n1,
where n1 is the refractive index of the initial medium through which the light propagates (the "incident medium"), and n2 is the index of the other medium.
Therefore, tan ib = 1.5
ib = tan^(-1) {1.5}
= 1.998
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