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 = 1.5

Explanation

Sunlight scattered by the sky is polarised, this is because the molecules of the earth's atmosphere acquire motion in two mutually perpendicular directions when sunlight falls on them, but an observer on earth receives light only form those molecules which move in the transverse direction
The Brewster angle for air-glass interface