A Doppler effect occurs when a source of sound moves
A)toward you.
B)away from you.
C)either of these
D)none of the above

Question

Quizplus · Accepted Answer

The Doppler effect occurs when there is a relative motion between the source of sound and the observer. This motion can be towards the observer or away from the observer, resulting in a change in the frequency of the sound waves. Therefore, a Doppler effect can occur when a source of sound moves either towards or away from the observer.

A Doppler Effect Occurs When a Source of Sound Moves