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## The dispersion equation of a waveguide, which relates the wavenumber k to the frequency ω, is k(ω) = (1/c)√(ω^2 − ωo^2 ) where the speed of light c = 3 × 108 m/s, and ωo is a constant. If the group velocity is 2 × 108 m/s, then the phase velocity is:

## (A) 1.5 × 108 m/s (B) 2 × 108 m/s (C) 3 × 108 m/s (D) 4.5 × 108 m/s

Asked On2019-07-08 15:21:28 by:KAPILJHADE

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