Question

The drawing shows three polarizer/analyzer pairs. The incident light beam for each pair is unpolarized and...

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.

A: ST =

B: ST =

C: ST =

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Answer #1

A)

Intensity, I = Io/2 = 46/2 = 23 W/m^2

St = 23 (cos(30 - 30))^2 = 23 W/m^2

B)

St = 23 x (cos(60 + 30))^2 = 0

C)

St = 23 (cos(60 - 30))^2 = 17.25 W/m^2

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