The phase velocity of an electrometric wave propagating in a hollow m – McqOptions

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1.	The phase velocity of an electrometric wave propagating in a hollow metallic rectangular waveguide in the TE10 mode is
A.	equal to its group velocity
B.	less than velocity of light in free space
C.	equal to velocity of light in free space
D.	greater than velocity of light in free space
Answer» D. greater than velocity of light in free space

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