In open organ pipe of length l is the wavelength of the fundamental note is:
Correct answer: B. Equal to 2L
- A. Equal to 1
- B. Equal to 2L
- C. Equal to 4L
- D. Equal to 3l/2
Explanation
Equal to 2L: This option is correct. In an open organ pipe, the fundamental wavelength corresponds to the length of the pipe, so the wavelength is equal to 2 times the length (2L).
This question appeared on the ETEA MDCAT 2009 paper, which you can sit online with every answer explained.
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About Organ Pipes
Organ pipes produce standing sound waves in air columns, with resonance determined by whether each end is open or closed. The topic covers nodes, antinodes, fundamental frequency, harmonics, wavelength and end correction. Open pipes support all harmonics, while closed pipes support only odd harmonics under the ideal model.
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