A) \[350\,\,m{{s}^{-1}}\]
B) \[330\,\,m{{s}^{-1}}\]
C) \[300\,\,m{{s}^{-1}}\]
D) \[450\,\,m{{s}^{-1}}\]
Correct Answer: B
Solution :
Key Idea: Frequency\[=\frac{1}{Time-period}\] The relation between velocity \[(v)\], and wavelength\[(\lambda )\]is given by \[v=n\lambda \] where, \[n=\frac{1}{T}\] Given, \[\lambda =\frac{16.5}{25}m,\,\,T=\frac{1}{500}s\] Hence, \[v=\frac{\lambda }{T}=\frac{16.5}{25}\times 500=330\,\,m{{s}^{-1}}\]
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