A) 303 ms?1
B) 332 ms?1
C) 323.2 ms?1
D) 300 ms?1
Correct Answer: C
Solution :
Number of beats per second, \[n=\frac{16}{20}=\frac{4}{5}\]Þ\[n={{n}_{1}}-{{n}_{2}}=\frac{v}{4}\left( \frac{1}{{{l}_{1}}}-\frac{1}{{{l}_{2}}} \right)\] Þ\[\frac{4}{5}=\frac{v}{4}\left( \frac{1}{1}-\frac{1}{1.01} \right)=\frac{0.01v}{4\times 1.01}\] \[v=\frac{16\times 101}{5}=323.2\,m{{s}^{-1}}\]You need to login to perform this action.
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