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Electromagnetic Waves question

2024 · 31 Jan · Shift 1 · Q79
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  5. /2024 · 31 Jan · Shift 1 · Q79

Electromagnetic Waves question

2024 · 31 Jan · Shift 1 · Q79

JEE MainPhysicsElectromagnetic WavesMCQ+4 / −1
In a plane EM wave, the electric field oscillates sinusoidally at a frequency of 5×1010 Hz5 \times 10^{10} \mathrm{~Hz}5×1010 Hz and an amplitude of 50 Vm−150 \mathrm{~Vm}^{-1}50 Vm−1. The total average energy density of the electromagnetic field of the wave is : [Use ε0=8.85×10−12C2/Nm2\varepsilon_0=8.85 \times 10^{-12} \mathrm{C}^2 / \mathrm{Nm}^2ε0​=8.85×10−12C2/Nm2 ]
  1. A
    4.425×10−8Jm−34.425 \times 10^{-8} \mathrm{Jm}^{-3}4.425×10−8Jm−3
  2. B
    2.212×10−10Jm−32.212 \times 10^{-10} \mathrm{Jm}^{-3}2.212×10−10Jm−3
  3. C
    2.212×10−8Jm−32.212 \times 10^{-8} \mathrm{Jm}^{-3}2.212×10−8Jm−3
  4. D
    1.106×10−8Jm−31.106 \times 10^{-8} \mathrm{Jm}^{-3}1.106×10−8Jm−3
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