A) \[~884.4\text{ }m/s\]
B) \[984.4\text{ }m/s\]
C) \[1084.4\text{ }m/s\]
D) none of these
Correct Answer: A
Solution :
Distance between two consecutive nodes with air\[{{l}_{A}}=5\,cm.\] Distance between two consecutive nodes with hydrogen? \[{{l}_{H}}=13.4\,cm.\] Velocity of sound in air\[~=330\,m/s\] The velocity of sound is given by \[\upsilon H=\upsilon A\frac{{{l}_{H}}}{{{l}_{A}}}=330\times \frac{13.4}{5}\] \[=884.5\,m/s\]
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