Q137 / 200 · NEET 2022 (Phase 2) · Physics

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):

  • A
    $c$
  • Correct answer
    B
    $\frac{1}{c}$
  • C
    $\frac{c}{\sqrt{\mu_0 \varepsilon_0}}$
  • D
    $\frac{\sqrt{\mu_0 \varepsilon_0}}{c}$

Solution

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.)

Hence, the correct answer is option: 'B'.

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