Geometrical OpticsHard

Question

A beam of unpolarised light of intensity Io is passed through a polaroid A and then through another polaroid B which is oriented so that its principal plane makes an angle of 45o relative to that of A. The intensity of the emergent light is :-

Options

A.I0
B.I0/2
C.I0/4
D.I0/8

Solution

Since the incident light is unpolarized, intensity after light passes through polaroid A is After this light passes through B,

       

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