If a stationary listener notes a change of 25 % in the frequency of a whistle of an engine coming towards him. then the velocity of the engine is (Take velocity of sound 332 m/s

Question:

If a stationary listener notes a change of 25 % in the frequency of a whistle of an engine coming towards him. then the velocity of the engine is (Take velocity of sound 332 m/s)

Options :

(a) 66.4 m/s
(b) 70.6 m/s
(c) 59.9 m/s
(d) 72.5 m/s

Answer :

(a) 66.4 m/s

Answer Steps :

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