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in Physics by (71.7k points)

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 

1 Answer

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by (79.9k points)
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Best answer

Correct option (C) 85 m/s

Explanation:

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