A) 540 ms-1
B) 5.4 ms-1
C) 0.184 ms-1
D) 9 ms-1
Correct Answer: D
Solution :
Number of waves per minute = 54 \ Number of waves per second = 54/60 Now \[v=n\lambda \] Þ \[n=\frac{54}{60}\times 10=9\,m/s.\]
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