A) 2000 m/s
B) 5 m/s
C) 20 m/s
D) 57cm/s
Correct Answer: B
Solution :
As given \[y={{10}^{-6}}\sin \left( 100t+20x+\frac{\pi }{4} \right)\] ...(i) Comparing it with \[y=a\sin (\omega t+kx+\phi )\] ?.(ii) we find, \[\omega =100\text{ }rad/s,\text{ }k=20/m\] \[\therefore \] \[v=\frac{\omega }{k}=\frac{100}{20}=5\,m/s\]You need to login to perform this action.
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