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Q.

Two Polaroids P1 and P2 are placed with their axis perpendicular to each other. Unpolarised light I0 is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its axis makes an angle 450 with that of P1. The intensity of transmitted light through P2 is :

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a

I04

b

I08

c

I016

d

I02

answer is B.

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Detailed Solution

Question Image

I1=I02

I2=I02cos245∘=I04

I3=I04cos245∘=I08

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