A) \[3{{f}_{0}}/4\]
B) \[{{f}_{0}}\]
C) \[{{f}_{0}}/2\]
D) \[2{{f}_{0}}\]
Correct Answer: B
Solution :
\[{{n}_{\text{open}}}=\frac{v}{2{{l}_{\text{open}}}}\] \[{{n}_{\text{closed}}}=\frac{v}{4{{l}_{\text{closed}}}}=\frac{v}{4{{l}_{\text{open}}}/2}=\frac{v}{2{{l}_{\text{open}}}}\] \[\left( As\ {{l}_{closed}}=\frac{{{l}_{open}}}{2} \right)\], i.e. frequency remains unchanged.You need to login to perform this action.
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