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  • The energy of an electromagnetic wave contained in a small volume oscillates withOption: 1 double the frequency of the wave<div class='

The energy of an electromagnetic wave contained in a small volume oscillates with

Option: 1

double the frequency of the wave


Option: 2

the frequency of the wave


Option: 3

zero frequency


Option: 4

half the frequency of the wave


Answers (1)

best_answer

double the frequency of the wave
E=E_0 \sin (w t-k x)
Energy density =\frac{1}{2} \varepsilon_0 \mathrm{E}_{\mathrm{net}}
\begin{aligned} & =\frac{1}{2} \varepsilon_0 E_0^2 \sin ^2(w t-k x) \\ & =\frac{1}{4} \varepsilon_0 E_0^2(1-\cos (2 \mathrm{wt}-2 \mathrm{kx})) \end{aligned}

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sudhir.kumar

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