A linearly polarized electromagnetic wave has an average intensity of 250 W/m2.

Question

A linearly polarized electromagnetic wave has an average intensity of 250 W/m2. This wave is directed towards two ideal polarizers. Polarizer A is oriented with its transmission axis at an angle of ?,-33.50 with the incident electric field. Polarizer B has its axis at an angle of ?2-78.00 with the incident electric field, as shown in the figure. View Along Axis Sidoview What is the average intensity of the wave after it passes through polarizer A? Submit Answer Tries 0/99 What is the average intensity of the wave after it passes through polarizer B? Submit Answer Tries 0/99

Explanation / Answer

let Io = 250 W/m^2

theta1 = 33.5 degrees

theta2 = 78 degrees

Intensity of light after passing through A,

IA = Io*cos^2(theta1)

= 250*cos^2(33.5)

= 174 W/m^2 <<<<<<-------------------Answer

Intensity of light after passing through B,

IB = IB*cos^2(theta2 - theta1)

= 174*cos^2(78 - 33.5)

= 174*cos^2(44.5)

= 88.5 W/m^2 <<<<<<<-------------------Answer

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