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To ensure that only dominant TE10 mode propagates in a rectangular waveguide, the operating frequency | |
A. | must be more than cutoff frequency of TE10 mode [Wrong Answer] |
B. | must be less than cutoff frequency of TE20 mode [Wrong Answer] |
C. | must be more than cutoff frequency of TE10 mode and less than cutoff frequency of TE20 mode [Correct Answer] |
D. | must be less than cutoff frequency of TE10 mode [Wrong Answer] |