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Question

two polaroids are placed at 90 degree to each other and the transmitted intensity is zero what happens when one more polaroid is placed between these two bisecting the angle between them how will the intensity of the transmitted light vary on further rotating the third polaroid

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Solution

Dear student,

If you placed the third Polaroid it will not effect the intensity from the system it remain zero . The concept is that if two Polaroid is at 90 degree then the transmitted intensity be zero. Now you place n no of Polaroid between them at any angle it doesn't matter it remain zero .
Regards

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