A) 891 Hz
B) 900 Hz
C) 1089 Hz
D) 1100 Hz
E) 1210 Hz
Correct Answer: C
Solution :
From Dopplers effect the perceived frequency\[f\]is given by \[f=f\left( \frac{v+{{v}_{o}}}{v} \right)\] Given, \[f=990\,Hz,v=300\,m/s,{{v}_{o}}=33\,m/s\] \[\therefore \] \[f=990\left( \frac{330+33}{330} \right)\] \[=990\times \frac{363}{330}=1089\,Hz\]You need to login to perform this action.
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