Multiple choice

An air-filled rectangular waveguide has inner dimensions of 3 cm X 2 cm. The wave impedance of the TE20 mode of propagation in the waveguide at a frequency of 30 GHz is (free space impedance $\eta_0$= 377$\Omega$)

  1. 308$\Omega$
  2. 355$\Omega$
  3. 400$\Omega$
  4. 461$\Omega$
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C Correct answer
Explanation

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