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 `lambda//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 INTERFACE.

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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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