The cut off frequency of a TE wave with waveguide dimension of a= 3.5 cm in a medium of permittivity 2.2 is(a) 2.88 GHz(b) 3.32 GHz(c) 4.5 GHz(d) 2.12 GHzI got this question in an online interview.Asked question is from Transverse Electric Waves(TE) topic in section Waveguides of Electromagnetic Theory

The cut off frequency of a TE wave with waveguide dimension of a= 3.5

1.	The cut off frequency of a TE wave with waveguide dimension of a= 3.5 cm in a medium of permittivity 2.2 is(a) 2.88 GHz(b) 3.32 GHz(c) 4.5 GHz(d) 2.12 GHzI got this question in an online interview.Asked question is from Transverse Electric Waves(TE) topic in section Waveguides of Electromagnetic Theory
Answer» The correct choice is (a) 2.88 GHZ The EXPLANATION: The cut off frequency of a TE WAVE in any other MEDIUM is mc/2a√εr. On substituting for a = 0.035 and εr = 2.2, we get the cut off frequency as 2.88 GHz.

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