Sound WavesHard
Question
A siren emitting sound of frequency 800 Hz is gong away from a static listener with a speed of 30m/s frequency of the sound to be heard by the listener is (Take velocity of sound = 300m/s)
Options
A.286.5Hz
B.481.2 HZ
C.733.3 Hz
D.644.8 Hz
Solution
Since, the source is going away from listener
n′ = n ′
800 × 
n′ = 800 ×
= 733.33 Hz
n′ = n ′
800 × n′ = 800 ×
= 733.33 HzCreate a free account to view solution
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