Question 395: Waves

Question

A progressive wave of frequency 50 Hz is travelling with velocity 350 m/s through a medium. The change in phase at a given time interval of 0.01 second is
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Accepted Answer

$\mathrm{n}=50 \mathrm{~Hz}, \mathrm{t}=0.01 \mathrm{~s}$
If $\mathrm{T}$ is the period and phase difference is $\phi$
$\begin{aligned}
& 	ext { then, } \frac{\mathrm{t}}{\mathrm{T}}=\frac{\phi}{2 \pi} \
& 	herefore \phi=2 \pi \frac{\mathrm{t}}{\mathrm{T}}=2 \pi \mathrm{nt} \
& 	herefore \phi=2 \pi 	imes 50 	imes 0.01=\pi \mathrm{~rad}
\end{aligned}$

Answer

$\frac{\pi}{4}$ rad

Answer

$\frac{3\pi}{2}$ rad

Answer

$\pi$ rad

Answer

$\frac{\pi}{2}$ rad

Waves

A progressive wave of frequency 50 Hz is travelling with velocity 350 m/s through a medium. The change in phase at a given time interval of 0.01 second is

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