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JEE PHYSICS MCQ: ELECTROMAGNETIC WAVES

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The average magnetic energy density of an electromagnetic wave of wavelength

\lambda

travelling in free space is given by

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Correct option: B

\frac{{{B^2}}}{{2{\mu _0}}}

Option B (

\frac{{{B^2}}}{{2{\mu _0}}}

) is correct because the average magnetic energy density of an electromagnetic wave in free space is given by this formula.

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