Q125 / 180 · COMEDK 2023 (Memory Based) · Physics

The ratio of amplitude of magnetic field to the amplitude of electric field of an electromagnetic wave propagating in vacuum is

  • Correct answer
    A
    reciprocal of speed of light in vacuum
  • B
    the speed of light in vacuum
  • C
    proportional to frequency of the electromagnetic wave
  • D
    inversely proportional to the frequency of the electromagnetic wave

Solution

For an electromagnetic wave, Speed of electromagnetic wave, $c=\frac{E_0}{B_0}$ $\therefore \frac{B_0}{E_0}=\frac{1}{c}=$ reciprocal of speed

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

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