Q.

A polariser and an analyser are inclined to each other at 45°. The intensity of polarised light emerging from the analyser is I. The intensity of unpolarized light incident on the polariser is

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a

I4

b

2 I

c

4 I

d

I

answer is C.

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Detailed Solution

I02cos2⁡45∘=I04=I,I0=4I
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A polariser and an analyser are inclined to each other at 45°. The intensity of polarised light emerging from the analyser is I. The intensity of unpolarized light incident on the polariser is