Define wave speed.
(N/A) The wave speed is defined as the distance traveled by a wave per unit time. It is the speed at which the wave disturbance propagates through a medium. Mathematically, it is given by the product of the wave frequency $(f)$ and the wavelength $(\lambda)$: $v = f \lambda$. In terms of angular frequency $(\omega)$ and wave number $(k)$, it is expressed as $v = \frac{\omega}{k}$.
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