A) 550 Hz
B) 555.5 Hz
C) 720 Hz
D) 500 Hz
Correct Answer: C
Solution :
Key Idea Apply Doppler's effect. Whenever there is a relative motion between a source of sound and the observer (listener), the frequency of sound heard by the observer is different from the actual frequency of sound emitted by source. Case IYou need to login to perform this action.
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