AP EAMCET · PHYSICS · Waves and Sound
The frequency of fifth harmonic of a closed pipe is equal to the frequency of third harmonic of an open pipe. If the length of the open pipe is 72 cm . then the length of the closed pipe is
- A 60 cm
- B 45 cm
- C 30 cm
- D 75 cm
Answer & Solution
Correct Answer
(A) 60 cm
Step-by-step Solution
Detailed explanation
For open organ pipe, \(1_{\mathrm{o}}=72 \mathrm{~cm}, \mathrm{f}=\frac{3 \mathrm{v}}{2 l_0}\) For closed organ pipe, \(\mathrm{f}=\frac{5 \mathrm{v}}{4 l_{\mathrm{c}}}\)…
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