A) \[\frac{f}{2}\]
B) \[\frac{3f}{4}\]
C) \[f\]
D) \[2f\]
Correct Answer: C
Solution :
Frequency of open organ pipe is double than that of closed pipe \[{{f}_{open}}=2{{f}_{close}}\] \[\Rightarrow \] \[{{f}_{close}}=\frac{1}{2}{{f}_{open}}\] when open pipe is immersed in water it will behave as a closed pipe of half length. Frequency of closed pipe is inversely proportional to its length. \[\therefore \] its frequency will double \[=2\times \frac{f}{2}=f\]
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