In the given electromagnetic wave $E_y=600\sin (\omega t-kx)V{m}^{-1}$, intensity of the associated light beam is (in $W/m^2$)

(Given ${\epsilon }_0=9\times {10}^{-12}{C}^2{N}^{-1}{m}^{-2}$)               [2024]

A plane electromagnetic wave propagating in x-direction is described by

$E_y=(200 V{m}^{-1})\sin [1.5\times {10}^{7}t-0.05x];$

The intensity of the wave is

(Use ${\epsilon }_0=8.85\times {10}^{-12}{C}^2{N}^{-1}{m}^{-2}$)              [2024]

In a plane EM wave, the electric field oscillates sinusoidally at a frequency of $5\times {10}^{10}Hz$ and an amplitude of $50V{m}^{-1}$. The total average energy density of the electromagnetic field of the wave is [Use ${\epsilon }_0=8.85\times {10}^{-12}{C}^2/N{m}^2$]                       [2024]