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Question: Answered & Verified by Expert
The ratio of the magnitude of the magnetic field and electric field intensity of a plane electromagnetic wave in free space of permeability $\mu_0$ and permittivity $\varepsilon_0$ is (Given that $c$ - velocity of light in free space):
PhysicsElectromagnetic WavesNEETNEET 2022 (Phase 2)
Options:
  • A $c$
  • B $\frac{1}{c}$
  • C $\frac{c}{\sqrt{\mu_0 \varepsilon_0}}$
  • D $\frac{\sqrt{\mu_0 \varepsilon_0}}{c}$
Solution:
2241 Upvotes Verified Answer
The correct answer is: $\frac{1}{c}$
As per question,
$\frac{\mathrm{B}_0}{\mathrm{E}_0}=\frac{1}{c}=\sqrt{\mu_0 \varepsilon_0}$
(where, the symbols have their usual meanings.)

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