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Question

In an electromagnetic wave, the amplitude of electric field is 1 V/m. the frequency of wave is 5× 1014Hz. The wave is propagating along z-axis. The average energy density of electric field, in Joulem3, will be


A

1.1× 1011

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B

2.2× 1012

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C

3.3× 1013

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D

4.4× 1014

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