The drawing shows three polarizer/analyzer pairs. The incident light beam for ea

Question

The drawing shows three polarizer/analyzer pairs. The incident light beam for each pair is unpolarized and has the same average intensity of 46 W/m2. Find the average intensity of the transmitted beam for each of the three cases (A, B, and C) shown in the drawing.

The drawing shows three polarizer/analyzer pairs. The incident light beam for each pair is unpolarized and has the same average intensity of 46 W/m2. Find the average intensity of the transmitted beam for each of the three cases (A, B, and C) shown in the drawing.

Explanation / Answer

AS WE KNOW DAT I = I0*cos^2(theta)

a here theta = 30-30 = 0

I = 46 cos 0 = 46 w/m^2

b. here theta = 60-(-30) = 90

hence I = 0 since cos 90 = 0

c. here theta = -30

I = 46 cos^30 = 34.5 w/m^2

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