A beam of unpolarised light of intensity is passed through a polaroid A and then…

PHYSICS · Single correct · CBSE · Physics · Wave Optics · Wave Optics

Problem

A beam of unpolarised light of intensity I0I_0 is passed through a polaroid A and then through another polaroid B which is oriented so that its principal plane makes an angle of 45∘45^\circ relative to that of A. The intensity of the emergent light is (1) I0I_0 (2) I0/2I_0/2 (3) I0/4I_0/4 (4) I0/8I_0/8

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