A Vertically Polarized Beam of Light of Intensity 100 W/m²

question 30

Multiple Choice

A vertically polarized beam of light of intensity 100 W/m² passes through two ideal polarizers.The transmission axis of the first polarizer makes an angle of 20.0° with the vertical,and the transmission axis of the second one makes an angle of 40.0° with the vertical.What is the intensity of the light after it has passes through both polarizers?

• A)22.2 W/m²
• B)44.4 W/m²
• C)66.6 W/m²
• D)78.0 W/m²
• E)11.7 W/m²

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