Q.

A plane polarised light beam with vibrations in the plane of incidence is incident on a glass prism at brewster’s angle of incidence. The reflected light is passed through a rotating polaroid. The intensity of light emitted by polaroid 

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a

is constant, but not zero

b

varies between maxmum and minimum, but not zero

c

varies between maximum and zero

d

is zero

answer is D.

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Detailed Solution

At brewster’s angle of incidence the reflected light is polarised with vibrations normal to plane

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