Question: A rectangular air-filled waveguide has a cross-section of 7cm x 3.5 cm and operates in dominant mode. Find the value of phase velocity for

A rectangular air-filled waveguide has a cross-section of 7cm x 3.5 cm and operates in dominant mode. Find

A rectangular air-filled waveguide has a cross-section of 7cm x 3.5 cm and operates in dominant mode. Find the value of phase velocity for a frequency of 4.5 GHz. * 2.14 x 10^6 m/s * 379.123 x 10^6 m/s * 441.852 x 10^6 m/s * 341.031 x 10^6 m/s

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