A) in the region between two nodes vibrate in same phase
B) on either side of a node vibrate in same phase
C) of the medium vibrate in same phase
D) in the region between two antinodes vibrate in same phase.
Correct Answer: A
Solution :
\[{{f}_{0}}=\frac{V}{2l}\]for both end open. Now one end open and one end closed.
\[{{f}_{0}}'=\frac{V}{4l}\] \[l'=l/2\] \[{{f}_{0}}'=\frac{V}{4l/2}=\frac{V}{2l}\] \[\therefore \] \[{{f}_{0}}'={{f}_{0}}\]
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