A parallel plate waveguide is known to have a cutoff wavelength for the m 1 TE and TM modes of c1 4 1 mm The guide is operated at wavelength 1 0 mm How many modes propagate

Question: A parallel-plate waveguide is known to have a cutoff wavelength for the m = 1 TE and TM modes of c1 = 4.1 mm.

A parallel-plate waveguide is known to have a cutoff wavelength for the m = 1 TE and TM modes of λ_c1 = 4.1 mm. The guide is operated at wavelength λ = 1.0 mm. How many modes propagate?

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