A rectangular air – filled waveguide has a cross section of 4 × 1 – McqOptions

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1.	A rectangular air – filled waveguide has a cross section of 4 × 10 Theminimum frequency which can propagation in the waveguide is
A.	1.5 ghz
B.	2.5 ghz
C.	2.0 ghz
D.	3.0 ghz
Answer» B. 2.5 ghz

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