A) \[286.5\,\,Hz\]
B) \[481\,\,Hz\]
C) \[434.2\,\,Hz\]
D) \[580\,\,Hz\]
Correct Answer: C
Solution :
Here: frequency of siren\[=500\,\,Hz\] The speed of siren\[{{v}_{s}}=50\,\,m/s\] Using Dopplers principle\[n=\frac{v}{v+{{v}_{s}}}n\] or \[n=\left( \frac{330}{330+50} \right)\times 500\] or \[n=\frac{330\times 500}{380}=434.2\,\,Hz\]You need to login to perform this action.
You will be redirected in
3 sec