A) \[2000\,m/s\]
B) \[5\,\,m/s\]
C) \[20\,\,m/s\]
D) \[5\pi \,\,m/s\]
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,\[\omega =100\,rad/s,k=20/m\] \[\therefore \,\,\,\,\,\,\,v=\frac{\omega }{k}=\frac{100}{20}=\,5m/s\]
You need to login to perform this action.
You will be redirected in
3 sec
