A) \[1:3\]
B) \[2:1\]
C) \[2:3\]
D) \[4:3\]
Correct Answer: A
Solution :
Frequency of fundamental note in closed pipe is \[n'=\frac{v}{4\,l}\] ?(1) \[n'\,'=\frac{v}{2\,{{l}_{2}}}\] ?(2) Given, \[n'=n''\] \[\therefore \] \[\frac{v}{4\,{{l}_{2}}}=\frac{v}{2\,{{l}_{2}}}\] \[\Rightarrow \] \[{{l}_{1}}:{{l}_{2}}=1 & :2\] Note: A closed pipe produces only odd harmonics while an open pipe produces both the even and odd harmonics.You need to login to perform this action.
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