A Siren of Frequency 3

question 45

Multiple Choice

A siren of frequency 3.20 kHz moves away from a stationary observer with a speed of 30.5 m/s.If the speed of sound is 335 m/s,the frequency heard by the observer is

• A)2.66 kHz
• B)2.93 kHz
• C)3.49 kHz
• D)3.52 kHz
• E)3.84 kHz

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