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Question

Unpolarized light of intensity 32Wm2 passes through three polarizes such that the transmission axis of the last polarizers is crossed with that of the first. The intensity of final emerging light is 3Wm2.The intensity of light transmitted by the first polarizered will be

A
32Wm2
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B
16Wm2
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C
8Wm2
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D
4Wm2
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Solution

The correct option is C 16Wm2
initial unpolarized intensity is 32Wm2
the intensity of light transmitted by the first polarizered will be Iunpolarized2=16Wm2

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