Answer:
Wavelength
Explanation:
The distance between the crest of one wave and the crest of the next wave is called wavelength of a wave. It is denoted by lambda λ. The maximum displacement of the particle of a wave is called amplitude of wave. The topmost value of displacement of the wave is called crest of a wave while the lowermost value of displacement of the wave is called trough of the wave.
Hence, by finding the distance between the crest of one wave and the crest of the next wave, we can determine the wavelength of a wave.
