Two cars A and B approaches a stationary observer from opposite sides – InterviewSolution

1.	Two cars A and B approaches a stationary observer from opposite sides with speed 15 m/s and 30 m/s respectively. Observer hears no beats. If the frequency of the horn of the car B is 504 Hz, then the frequency of the horn of the car A will be[Take speed of sound =330 m/s]
Answer» Two cars $A$ and $B$ approaches a stationary observer from opposite sides with speed $15 m/s$ and $30 m/s$ respectively. Observer hears no beats. If the frequency of the horn of the car $B$ is $504 Hz$ , then the frequency of the horn of the car $A$ will be $[$ Take speed of sound $= 330 m/s]$

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