Question

Which describes the wavelength of a wave?

A.
the distance from the crest to the rest position

B.
the distance from one point on a wave to the next similar point

C.
the distance from the crest to the trough

D.
the distance from the rest position to the trough

Answer 1

So we want to know what physical quantity represents the wavelength of a wave. Waves have a few phyiscal quantities that are used to describe them. Frequency, amplitude and wavelength. Frequency is the number of oscillations in a specific time interval, amplitude is the maximal elongation of a wave and wavelength is the distance from one point ona a wave to the next similar point. So the correct answer is B.