counting wavelengths how many complete wavelengths are present in the sound wave shown? 1 2 4 6

counting wavelengths how many complete wavelengths are present in the sound wave shown? 1 2 4 6
Answer
Explanation:
Step1: Define a complete wavelength
A complete wavelength is one full cycle of the wave, from one point to the next identical - looking point.
Step2: Count the cycles
By visually inspecting the sound - wave pattern, we can see that there are 4 complete cycles.
Answer:
C. 4