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Consider three polarizer's P, P, and P, placed along an axis as shown in the figure.
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P.
(unpolarized)
The pass axis of P and P, are at right angles to each other while the pass axis of P,
makes an angle 0 with that of P. A beam of unpolarized light of intensity 1, is incident
on P as shown. The intensity of light emerging from P, is

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