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The wavelength of a wave is the distance between

  • A.Crest and trough
  • B.Crest and crest
  • C.Trough and trough
  • D.Both b & c

Answer: D

The wavelength is the distance between crest and crest, or trough and trough.

It is the length of one complete cycle, so any two corresponding points in phase are a wavelength apart. Crest to the adjacent trough is only half a wavelength.

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