Question
Download Solution PDFWhen the length of a closed air column is increased then the frequency will-
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Fundamental frequency: Fundamental frequency is the minimum frequency of vibration.
- In closed organ pipe only odd numbers of harmonics are produced.
- In the case of an open organ pipe all even as well as odd harmonics are produced.
In a closed pipe, the nth normal mode of frequency is given by the relation:
Frequency (f) = (2n - 1) v / 4L
Where v = speed of sound, L = length of pipe, n is an integer = 0, 1, 2, 3...
EXPLANATION:
- From the above formula of the frequency, the frequency is inversely proportional to the length of the air column.
- When the length of a closed air column is increased then the frequency will decrease. So option 1 is correct.
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