A monochromatic wave propagates along a waveguide in z direction. These points of constant phase travel in constant phase travel at a phase velocity Vp is given by

Question

A monochromatic wave propagates along a waveguide in z direction. These points of constant phase travel in constant phase travel at a phase velocity Vp is given by

Quizplus · Accepted Answer

The phase velocity $V_p$ of a wave is defined as the rate at which the phase of the wave propagates in space, which is given by the ratio of the wave's frequency ($\omega$) to its wavenumber ($k$), hence $V_p = \omega / k$.

A Monochromatic Wave Propagates Along a Waveguide in Z Direction