Home Physics Wave and Sound Speed,Velocity of the Waves and Frequence The apparent frequency of the whistle of an …
Physics Wave and Sound Speed,Velocity of the Waves and Frequence MCQ (Single Correct)

The apparent frequency of the whistle of an engine changes by the ratio 5/3 as the engine passes a stationary observer. If the velocity of sound is 340 m/s, then the velocity of the engine is –

A
340 m/s
B
170 m/s
C
85 m/s
D
42.5 m/s

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The correct answer is:
C

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