A) 86.5 m
B) 80.6 m
C) 75 m
D) 8.65 m
Correct Answer: A
Solution :
The echo is heard when the sound wave travels a distance \[2x\]. As \[\text{distance = speed }\times \text{ time}\] \[\therefore 2x=346\times 0.5\] Or \[x=\frac{346\times 0.5}{2}=86.5m\]You need to login to perform this action.
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