A) 220 m
B) 247.5 m
C) 268.5 m
D) 292.5 m
Correct Answer: B
Solution :
If d is the distance between man and reflecting surface of sound then for hearing echo \[2d=v\times t\Rightarrow d=\frac{330\times 1.5}{2}=247.5\]\[m\]You need to login to perform this action.
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