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Intensity of Polarised Light

An unpolarise...

Question

An unpolarised beam of intensity 2a² passes through a thin polaroid. Assuming zero absorption in the polaroid, the intensity of emergent plane polarised light will be

A

a²

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B

2a²

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C

√2 a²

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D

a²/ √2

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Solution

The correct option is A
a²

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