NEET · Physics · STD 11 - 14. waves and sound
The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of the closed organ pipe is \(20\, cm,\) the length of the open organ pipe is .... \(cm\)
- A \(13.2\)
- B \(8\)
- C \(16\)
- D \(12.5\)
Answer & Solution
Correct Answer
(A) \(13.2\)
Step-by-step Solution
Detailed explanation
For closed organ pipe, third harmonic is \(\frac{3 v}{4 l}\) For open organ pipe, fundamental frequency is \(\frac{v}{2 l^{\prime}}\)
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