A) \[20m/s\]
B) \[5m/s\]
C) \[2000m/s\]
D) \[~57m/s\]
Correct Answer: B
Solution :
[b] From equation, \[\omega =100\] \[\therefore \,\,\,\frac{2\pi }{T}=100\Rightarrow v=\frac{100}{2\pi }\] \[\frac{2\pi }{\lambda }=20\Rightarrow \lambda =\frac{2\pi }{20}\] \[v=\lambda v=\frac{2\pi }{20}\times \frac{100}{2\pi }=5m/s\]
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