MCQEasyJEE Main 2024 · 31 January, Shift 1Characteristics of EM Waves

Physics Question from JEE Main 2024 · 31 January, Shift 1

In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 5×1010 Hz5 \times 10^{10} \, \text{Hz} and an amplitude of 50 V/m50 \, \text{V/m}. The total average energy density of the electromagnetic field of the wave is:

  • A

    1.106×10−8 J/m31.106 \times 10^{-8} \, \text{J/m}^3

  • B

    4.425×10−8 J/m34.425 \times 10^{-8} \, \text{J/m}^3

  • C

    2.212×10−8 J/m32.212 \times 10^{-8} \, \text{J/m}^3

  • D

    2.212×10−10 J/m32.212 \times 10^{-10} \, \text{J/m}^3

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