Unpolarised light is incident on a plane glass surface. What should be the angle of the incidence so that the reflected and refracted rays are perpendicular to each other?

Unpolarised light is incident on a plane glass surface. What should be

1.	Unpolarised light is incident on a plane glass surface. What should be the angle of the incidence so that the reflected and refracted rays are perpendicular to each other?
Answer» Solution :For i+r to be equal to `pi//2`, we should have tan `i_(B)=mu=1.5`. This GIVES `i_B=57^(@)`. This is the Brewster's ANGLE for air to GLASS SURFACE.

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Unpolarised light is incident on a plane glass surface. What should be the angle of the incidence so that the reflected and refracted rays are perpendicular to each other?

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