A plane wave propagating in the dielectric medium has an electric field given as Ex = E0 cos (2.6 × 1010 t - 100 z). The phase velocity of plane wave is:

A plane wave propagating in the dielectric medium has an electric fiel

1.	A plane wave propagating in the dielectric medium has an electric field given as Ex = E0 cos (2.6 × 1010 t - 100 z). The phase velocity of plane wave is:
A.	106 m / sec
B.	2.6 × 108 m / sec
C.	3.0 × 108 m / sec
D.	4.0 × 108 m / sec
Answer» C. 3.0 × 108 m / sec

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A plane wave propagating in the dielectric medium has an electric field given as Ex = E0 cos (2.6 × 1010 t - 100 z). The phase velocity of plane wave is:

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