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A beam of polarized light with an average intensity of 17.0 W/m² is sent through a...

A beam of polarized light with an average intensity of 17.0 W/m² is sent through a polarizer. The transmission axis makes an angle of 27.0° with respect to the direction of polarization. Determine the rms value of the magnetic field of the transmitted beam.

I = I0 cos^2(theta)
I = 17*cos(27)^2=13.50
I = c n e0 Erms^2
Erms = sqrt(13.50/(3E8*8.85E-12))=71.31 was wrong

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