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The polaroids $P_{1}, P_{2} a n d P_{3}$ are arranged coaxially. The angle between $P_{1} a n d P_{2}$ is $37^{0}$ . The angle between $P_{2} a n d P_{3} i s θ$ if intensity of emerging light is a quarter of intensity of unpolarized light then $θ$ is equal to

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detailed solution

Correct option is D

according to Malus law the intensity of emergent light will be I2cos2θ1cos2θ2 = I4 according to given condition121625cos2θ2=14 cos2θ2=2532 cosθ2=542

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The polaroids P1, P2 and P3 are arranged coaxially. The angle between P1 and P2 is 370. The angle between P2 and P3 is θ if intensity of emerging light is a quarter of intensity of unpolarized light then θ is equal to

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The polaroids $P_{1}, P_{2} a n d P_{3}$ are arranged coaxially. The angle between $P_{1} a n d P_{2}$ is $37^{0}$ . The angle between $P_{2} a n d P_{3} i s θ$ if intensity of emerging light is a quarter of intensity of unpolarized light then $θ$ is equal to