A Linearly Polarized Electromagnetic Wave Is Sent Through Two Sheets

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.
-What is the peak value of the electric field amplitude after it goes through sheet A?

A) 0.30E₀
B) 0.50E₀
C) 0.60E₀
D) 0.75E₀
E) 0.87E₀

Correct Answer:

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