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An organic pipe closed at one end is 80cm long. Determine the frequency of the ...

An organic pipe closed at one end is 80cm long. Determine the frequency of the fundamental note assuming that the speed of sound in air is 340ms-1
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  • A 106Hz
  • B 213Hz
  • C 318Hz
  • D 425Hz
Correct Answer: Option A
Explanation:
\(\lambda\) = 4L
= 4 x 80 = 320cm
Converting 320cm to m, we have 3.2m
F = \(\frac{V}{\lambda}\)
= \(\frac{340}{3.2}\)
= 106.25Hz
\(\approxeq\) 106Hz

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