Problem: If a source of sound waves is rapidly approaching a person, the sound heard by the person appears to have A. a frequency higher than the original frequency. B. a pitch lower than the original pitch. C. an amplitude lower than the original amplitude. D. a period higher than the original period. 

FREE Expert Solution

By Doppler effect, one hears high pitch of an approaching sound and notices that the pitch drops suddenly as the sound passes. 

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Problem Details

If a source of sound waves is rapidly approaching a person, the sound heard by the person appears to have 

A. a frequency higher than the original frequency. 

B. a pitch lower than the original pitch. 

C. an amplitude lower than the original amplitude. 

D. a period higher than the original period.