A) 2250 Hz
B) 2060 Hz
C) 2150 Hz
D) 2300 Hz
Correct Answer: A
Solution :
20m/s Applying Doppler effect for sound \[f=\frac{\text{v}+\text{v}}{\text{v}-{{\text{v}}_{s}}}{{f}_{0}}({{\text{v}}_{0}}\And {{v}_{s}}\] is taken \[\oplus \]when approaching each other) \[2000=\frac{340+(-20)}{340-(-20)}{{f}_{0}}\] \[{{f}_{0}}=2250Hz.\]You need to login to perform this action.
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