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A Linearly Polarized Electromagnetic Wave Is Sent Through Two Sheets

question 66

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A linearly polarized electromagnetic wave is sent through two sheets of polarizing material. The first sheet, A, is oriented so that its transmission axis makes an angle of 30° with respect to the incident electric field of the wave. The second sheet, B, is oriented so that its transmission axis makes an angle of 90° with the incident electric field of the wave. The incident beam has an electric field of peak magnitude E0 and average intensity S0. A linearly polarized electromagnetic wave is sent through two sheets of polarizing material. The first sheet, A, is oriented so that its transmission axis makes an angle of 30° with respect to the incident electric field of the wave. The second sheet, B, is oriented so that its transmission axis makes an angle of 90° with the incident electric field of the wave. The incident beam has an electric field of peak magnitude E<sub>0</sub> and average intensity S<sub>0</sub>.   -What is the average intensity of the wave after it passes through A? A) 0.30S<sub>0</sub> B) 0.50S<sub>0</sub> C) 0.60S<sub>0</sub> D) 0.75S<sub>0</sub> E) 0.87S<sub>0</sub>
-What is the average intensity of the wave after it passes through A?


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