A) \[5.6\,\,s\]
B) \[8.7\,\,s\]
C) \[5.4\,\,s\]
D) \[6.7\,\,s\]
Correct Answer: B
Solution :
\[{{T}_{d}}=\sqrt{\frac{2h}{g}}=\sqrt{\frac{2\times 300}{9.8}}=\sqrt{61.2}\] Let \['t'\] be the time taken for the splash of sound to be heard. \[{{t}_{d}}+t=\sqrt{\frac{2h}{g}}+\frac{300}{340}=\sqrt{61.2}+\frac{15}{17}\]You need to login to perform this action.
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