Question

The phase velocity of a wave described by the equation $\Psi = \Psi_0 \, \sin (kx + \omega t + \pi / 2)$ is

• A. $\frac{x}{t}$
• B. $\frac{\Psi_0 } { \omega}$
• C. $\frac{\omega}{k}$
• D. $\frac{\pi} {2k}$

Answer 1

Answer: (C)

$\frac{\omega}{k}$

Answer 2

Given,
$\psi=\psi_{0} \sin \left(k x+\omega t+\frac{\pi}{2}\right)$
Phase velocity of wave
$V=\frac{\omega}{k}=\frac{\text { Angular frequency }}{\text { Propagation constant }}$