Answer :
According to the given statement 65.5Hz is the frequency of the next higher harmonic for this pipe.
What is the fundamental frequency called?
The fundamental frequency is the lowest frequency that can be produced by a certain instrument. The first harmonics of the instrument is another name for the fundamental frequency.
Why is the fundamental frequency the loudest?
The fundamental is recognized by the ear as the particular pitch of the musical tone (harmonic spectrum) because it has the cutoff frequency and is perceived as being the loudest. The ear combines the partials into the a single tone rather of hearing each one independently.
Briefing:
f = 131hz (given)
A fundamental frequency f = v/4l is the difference between two harmonic that follow one another. Hence,
2(v/4l) = 131
v/4l = 131/2 = 65.5Hz
As a result, we can see that 65.5Hz is the fundamental frequency of a closed organ pipe.
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