In electromagnetic wave if \( u_{e} \) and \( u_{m} \) are mean \( ...

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In electromagnetic wave if \( u_{e} \) and \( u_{m} \) are mean
\( \mathrm{P} \)
electric and magnetic energy densities respectively,
W
then:
(1) \( u_{m}=u_{e} \)
(2) \( u_{m}u_{e} \)
(3) \( u_{m}u_{e} \)
4) None of these
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