A beam of plane polarised light falls normally on apolariser of cross-sectional area \( 3 \times...

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A beam of plane polarised light falls normally on apolariser of cross-sectional area \( 3 \times 9^{4} \mathrm{~m}^{2} \) which rotates about the axis of the ray with an angular velocity of \( 31.4 \) radian \( \varepsilon^{-1} \). Find the energy of light passing through the polariser per revolution and intensity of the emergent beam if the flux of energy of the incident beam is \( 9^{-3} \mathrm{~W} \).
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