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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 10⁸ m/sec
B .  5 x 10⁸ m/sec
C .  3 x 10⁸ m/sec
D .  1.5 x 10⁸ m/sec
Answer: Option A
Answer: (a).1.8 x 10⁸ m/sec

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