Question

select the correct answer. if the pitch of the sound coming out of a speaker increases, which statement is true about the sound wave? a. the wavelength increases. b. the wavelength decreases. c. the amplitude increases. d. the amplitude decreases.

Explanation:

The pitch of a sound is related to its frequency. The higher the pitch, the higher the frequency. The speed of sound is constant in a given medium. Using the formula $v = f\lambda$ (where $v$ is speed, $f$ is frequency, and $\lambda$ is wavelength), when $v$ is constant and $f$ increases, $\lambda$ must decrease. Amplitude is related to the loudness, not pitch.

Answer:

B. The wavelength decreases.