A Linearly Polarized Electromagnetic Wave Is Sent Through Two Sheets

question 25

Multiple Choice

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

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