A) 28 m
B) 18 m
C) 19 m
D) 16.5 m
Correct Answer: D
Solution :
\[2d=v\times T\] where v = velocity of sound =332m/s T = persistence of hearing \[=\frac{1}{10}s\] \[\therefore \] \[d=332\times \frac{1}{10}\times \frac{1}{2}=16.6\,m\]
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