A beam of unpolarised light having flux ...

A beam of unpolarised light having flux `10^(-3)` watt falls normally on a polarizer of cross sectional area `3 xx 10^(-4) m^(2)`. The polarizer rotates with an angular frequency of 3.14 rad/s. The energy of light passing through the polarizer per revolution will be

`10^(-4)` joule

`10^(-3)` joule

`10^(-2)` joule

`10^(-1)` joule

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