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Q: If the distance between a crest and its consecutive trough for a sound wave is L, then its wavelength is given by
  • A. L
  • B. 2L
  • C. 3L
  • D. L / 2
Correct Answer: Option B - The wavelength of the sound wave in the distance between two consecutive crests or two consecutive troughs. So, the length of the crest or through are always same here, it is given that the distance between a crest and its consecutive through for a sound wave is L. So, its wavelength is 2L.
B. The wavelength of the sound wave in the distance between two consecutive crests or two consecutive troughs. So, the length of the crest or through are always same here, it is given that the distance between a crest and its consecutive through for a sound wave is L. So, its wavelength is 2L.

Explanations:

The wavelength of the sound wave in the distance between two consecutive crests or two consecutive troughs. So, the length of the crest or through are always same here, it is given that the distance between a crest and its consecutive through for a sound wave is L. So, its wavelength is 2L.