A) 30 m/s
B) 40 m/s
C) 300 m/s
D) 400 m/s
Correct Answer: A
Solution :
Equation of the wave given \[y=0.02\sin 2\pi \left[ \frac{t}{0.01}-\frac{x}{0.3} \right]\] ?(1) The standard equation of the progressive wave is \[y=0.02\sin 2\pi \left[ \frac{t}{T}-\frac{x}{\lambda } \right]\] ?(2) Comparing the given equation with the standard equation of the progressive wave, we get time period, \[T=0.01\,\sec .\] wavelength, \[\lambda =0.3\,m\] The frequency of the wave is given by \[v=\frac{1}{T}=\frac{1}{0.01}=100\,Hz\] Hence, the velocity of propagation of the wav \[\,\upsilon =v\lambda =100\times 0.3=30\,m/s\]You need to login to perform this action.
You will be redirected in
3 sec