Two cars $A$ and $B$ are moving in the same direction with speeds $36\, km/hr$ and $54 \,km/hr$ respectively. Car $B$ is ahead of $A$. If $A$ sounds horn of frequency $1000\, Hz$ and the speed of sound in air is $340\, m/s$, the frequency of sound received by the driver of car $B$ is ..... $Hz$
Two cars $A$ and $B$ are moving in the same direction with speeds $36\, km/hr$ and $54 \,km/hr$ respectively. Car $B$ is ahead of $A$. If $A$ sounds horn of frequency $1000\, Hz$ and the speed of sound in air is $340\, m/s$, the frequency of sound received by the driver of car $B$ is ..... $Hz$
- A
$928.57$
- B
$984.84$
- C
$946.37$
- D
$938.47$
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