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A rectangular wave guide is designed to propagate at the dominant mode TE10 at a frequency of 5 GHz. The cut-off frequency is 0.8 of signal frequency. The ratio of the guide width to height is 2. The dimensions of the guide are
Answer : Option A
Explanation :
λc = 2a or
⇒ a = 3.75 cm
Also,
∴ .
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