In a plane e.m. wave, the electric field...

In a plane e.m. wave, the electric field varies with time having an amplitude `1Vm^-1`. The frequency of wave is `0.5xx10^(15) Hz`. The wave is propagating along Z-axis. What is the average energy density of (i) electric field (ii) magnetic field (iii) total average energy density (iv) what is the amplitude of magnetic field?

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A, B, C, D

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