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A rectangular metal waveguide filled with a dielectric of relative permittivity εr = 4, has the inside dimensions 3 x 1.2 cm, the cut off frequency for the dominant mode is | |
A. | 2.5 GHz [Wrong Answer] |
B. | 5 GHz [Correct Answer] |
C. | 10 GHz [Wrong Answer] |
D. | 12.5 GHz [Wrong Answer] |
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