A) 3
B) 4
C) 5
D) 6
E) 7
Correct Answer: C
Solution :
\[f=f\left( \frac{v-{{v}_{L}}}{v-{{v}_{s}}} \right)\] \[=165\left( \frac{335+5}{335-5} \right)\]\[(\because {{v}_{L}}=-5m{{s}^{-1}},{{v}_{s}}=5m{{s}^{-1}})\] \[=165\times \frac{340}{330}\] \[=170\text{ }Hz\] Therefore, the number of beats heard \[=170-165=5\]You need to login to perform this action.
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