A) \[920\text{ }m/s\]
B) \[720\text{ }m/s\]
C) \[820\text{ }m/s\]
D) \[360\text{ }m/s.\]
Correct Answer: D
Solution :
We know that the minimum length of the air column in a resonance tube corresponds to the fundamental mode of vibrations. Hence by ignoring end correction. \[l=\frac{\lambda }{4}\] \[\Rightarrow \]\[\lambda =4l=4\times 20=80cm=0.8m\] Resonant frequency \[\upsilon =450Hz\] \[\therefore \] Speed of sound \[v=v\lambda \] \[=450\times 0.8=360m/s\]You need to login to perform this action.
You will be redirected in
3 sec