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1. A 4 cm by 3 cm rectangular waveguide with air cavity, is operating at 12 GHz with TE11 mode. The cut-off frequency is:
(A): 1.5 GHz
(B): 4.75 GHz
(C): 6.25 GHz
(D): 8.75 GHz
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By: guest on 02 Jun 2017 12.55 am
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