Question:

9. The sound emitted from the siren of an ambulance has frequency of 1500 Hz. The speed of sound is 340 m/s. Calculate the difference in frequencies heard by a stationary observer if the ambulance initially, travels towards and then away from the observer at a speed of 30 m/s.

Options :

Answer Steps :

Given & Formula :-

Solution :-

Step1 :-

Step2 :-

 

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