A) \[400\,\,unit\]
B) \[350\,\,unit\]
C) \[209\,\,unit\]
D) \[200\,\,unit\]
Correct Answer: D
Solution :
Key Idea: Standard equation of standing wave is \[y=a\sin (\omega t-kx)\] The given equation is \[y=0.3\sin (314t-1.57x)\] On comparing the two equations, we have \[\omega t=314t\] and \[kx=1.57x\] \[\Rightarrow \] \[\omega =314\] and \[k=1.57\] Hence, velocity of standing wave is \[v=\frac{\omega }{k}=\frac{314}{1.57}=200\,\,unit\]You need to login to perform this action.
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