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The two nearest harmonics of a tube closed at one end and open at other end are 220 Hz and 260 Hz. What is the fundamental frequency of the system?
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- 20 Hz
- 30 Hz
- 40 Hz
- 10 Hz
Correct Option: A
Difference in two successive frequencies of closed pipe 2v/4l = 260 – 220 = 40 Hz
or 2v/4l = 40 Hz
⇒ v/4l = 20Hz
Which is the fundamental frequency of system of closed organ pipe.
