Which statement best describes wavelength?
a. wavelength is the same as pitch
b. wavelength is the speed at which a wave travels
c. wavelength is the length of one complete wave cycle
d. wavelength is the length of two complete wave cycles

Wavelength is the length of one complete wave cycle  (Option C)

Explanation:

Wavelength is the distance between two consecutive  crests or troughs. It can be measured by any two consecutive points in a wave. Wavelength is commonly designated by the sign λ   (lambda). Wavelength depends on the medium ( for example air, water or vacuum) that a wave travels through.

According to the following wave equation, it can also be deduced that wavelength is inversely proportional to frequency.

V = f λ

V is the speed

F is the frequency  

λ is wavelength  

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