I just need question #36 to be answered. If you could provide an explanation or

Question

I just need question #36 to be answered. If you could provide an explanation or work then that would be greatly appreciated. Thank you in advanced!

Unpolarized light with initial intensity of 100 W/m2 goes through 3 polarizers. The first polarizer has a transmission axis at an angle of +30° with respect to the vertical, the second polarizer has a transmission axis at an angle of +30° with respect to the vertical (the same as the first), and the third polarizer has a transmission axis at an angle of +50° with respect to the vertical. 33) What is the intensity of light after the first two polarizers? a) 100 W/m2 b) 75 W/m2 ?) 50 W/m. d) 25 W/m e) 0 W/m2 34) What is the intensity of light after the third polarizer? a) 88 W/m2 b) 50 W/m2 c) 44 W/m2 d) 41 W/m e) 21 W/m2 35) Increasing the first polarizer by just a small angle will do what to the final intensity of light? a) increase it b) decrease it c) it will not change it 36) After passing through a fourth polarizer (not included in the problem sctup above) the electric field has an rms value of 51.3 N/C. What is the total average energy density of the light after passing through the fourth polarizer? a) 6.8 x 109 J/m b) 2.3 x 108 J/m3 c) 4.5 x 10 J/m3

Explanation / Answer

Energy density = 0.5 e0 E^2 = e0* Erms^2

= 8.85e-12*51.3^2

= 2.3*10^-8 J/m^2

option b is correct.

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