Question: A wave is propagated in a waveguide at frequency of 9 GHz and separation is 2 cm between walls Calculate group velocity for dominant mode.
Options
A : 1.8 x 10 8 m/sec
B : 5 x 10 8 m/sec
C : 3 x 10 8 m/sec
D : 1.5 x 10 8 m/sec
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