A) 240 Hz
B) 270 Hz
C) 280 Hz
D) 360 Hz
Correct Answer: B
Solution :
\[n'=n\,\left( \frac{v+{{v}_{O}}}{v-{{v}_{S}}} \right)=240\,\left( \frac{340+20}{340-20} \right)=270\,Hz\].You need to login to perform this action.
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