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At what angles should the axes of two polaroids be placed so as to reduce the...

At what angles should the axes of two polaroids be placed so as to reduce the intensity of incident unpolarized light to 1/7.

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Answer #1

let the intensity of unpolarized light be . When it passes through the 1st polaroid it becomes polarised and its intensity becomes .

Now when it passes through the 2nd polaroid its intensity becomes , Let the angle between 2 polaroids be

Then according to Malus 's law

please upvote...thank u:)

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