A Stationary Source Emits a Sound Wave of Frequency F

question 14

Multiple Choice

A stationary source emits a sound wave of frequency f. If it were possible for a man to travel toward the source at the speed of sound, he would observe the emitted sound to have a frequency of:

• A) zero
• B) f/2
• C) 2f/3
• D) 2f
• E) infinity

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