The dimension for a waveguide in dominant mode with a cut off wavelength of 2 units is(a) 2(b) 4(c) 6(d) 8I had been asked this question at a job interview.This key question is from Cut-off Frequency and Wavelength in portion Waveguides of Electromagnetic Theory

The dimension for a waveguide in dominant mode with a cut off waveleng

1.	The dimension for a waveguide in dominant mode with a cut off wavelength of 2 units is(a) 2(b) 4(c) 6(d) 8I had been asked this question at a job interview.This key question is from Cut-off Frequency and Wavelength in portion Waveguides of Electromagnetic Theory
Answer» Correct option is (b) 4 To ELABORATE: The cut off WAVELENGTH of a waveguide is GIVEN by λc = 2a/m. For the dominant MODE, m = 1. Given that λc = 2, thus we get a = 4 units.

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