A) 0.1 m/s
B) 10 m/s
C) 100 m/s
D) 1000 m/s
Correct Answer: D
Solution :
Key Idea: The standard wave equation is |
\[y=a\sin \,(\omega t-kx)\] |
The given wave equation is |
\[y=a\sin \,\left( 100t-\frac{x}{10} \right)\] |
Compare it with the standard wave equation, we obtain |
\[\omega =100,\,k=\frac{1}{10}\] |
Velocity of the wave, |
\[v=\frac{\omega }{k}=\frac{100}{\frac{1}{10}}=100\times 10=1000\,m/s\] |
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