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GATE EC 2022 Set 1 — Question 52

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MSQ+2 / -0MediumTE & TM ModesWaveguides & Optical FibersElectromagneticsCutoff Frequency & Guide Wavelength

Electromagnetics → Waveguides & Optical Fibers → Cutoff Frequency & Guide Wavelength

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Question

A waveguide consists of two infinite parallel plates (perfect conductors) at a separation of 10−410^{-4} cm, with air as the dielectric. Assume the speed of light in air to be 3×1083 \times 10^8 m/s. The frequency/frequencies of TM waves which can propagate in this waveguide is/are _______.
  1. A.
    6×10156 \times 10^{15} Hz
  2. B.
    0.5×10120.5 \times 10^{12} Hz
  3. C.
    8×10148 \times 10^{14} Hz
  4. D.
    1×10131 \times 10^{13} Hz

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