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Unpolarized light of intensity I 0 passed through an ideal polarizing sheet with

ID: 1388612 • Letter: U

Question

Unpolarized light of intensity I0 passed through an ideal polarizing sheet with its polarizing axis at the 12 o'clock position and then through a second ideal sheet with its polarizing axis at the 1 o'clock position. What is the intensity of the emerging light in terms of I0? Unpolarized light of intensity I0 passed through an ideal polarizing sheet with its polarizing axis at the 12 o'clock position and then through a second ideal sheet with its polarizing axis at the 1 o'clock position. What is the intensity of the emerging light in terms of I0?

Explanation / Answer

The first polarizer cuts the intensity to 1/2.

The second polarizer makes an angle 30 degrees with the first one, so it multiplies the intensity by cos^2 30.

Thus,

Iemerging = [Io cos^2 (30)]/2    [ANSWER]

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