For the Doppler effect to occur, there must be
A) a moving source.
B) a moving observer.
C) relative motion between a source and an observer.
D) no motion.

Name: For the Doppler effect to occur, there must be A) a moving source. B) a moving observer. C) relative motion between a source and an observer. D) no motion.
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Question

Quizplus · Accepted Answer

The Doppler effect occurs when there is relative motion between the source of a wave and the observer, causing a change in the observed frequency.

For the Doppler Effect to Occur, There Must Be