If f is the frequency of electromagnetic wave, fc is cutoff frequency, – McqOptions

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1.	If f is the frequency of electromagnetic wave, fc is cutoff frequency, then in a rectangular waveguide
A.	attenuation is low when f > fc
B.	attenuation is low when f < fc
C.	attenuation is high when f < fc
D.	either (b) or (c)
Answer» B. attenuation is low when f < fc

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