Multiple choice

A plane electromagnetic wave propagating in free space is incident normally on a large slab of loss-less, non-magnetic, dielectric material with $\epsilon \gt \epsilon_0$. Maxima and minima are observed when the electric field is measured in front of the slab. The maximum electric field is found to be 5 times the minimum field. The intrinsic impedance of the medium should be

  1. 120$x \Omega$
  2. 60$x \Omega$
  3. 600$x \Omega$
  4. 24$x \Omega$
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D Correct answer
Explanation

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