Question

which factor primarily affects the pitch of a sound?
○ frequency
○ wavelength
○ speed
○ amplitude
clear my selection

Explanation:

In the context of sound physics, pitch is how high or low a sound is perceived. Frequency (the number of wave cycles per unit time) is the primary factor affecting pitch—higher frequency means higher pitch, lower frequency means lower pitch. Wavelength is related to frequency (via wave speed, \( v = f\lambda \)), but it's not the primary determinant of pitch. Speed of sound depends on the medium and affects how fast sound travels, not pitch. Amplitude affects loudness (volume), not pitch.

Answer:

A. frequency