A) \[\frac{2h}{v}\]
B) \[\sqrt{\frac{2h}{v}}+\frac{h}{g}\]
C) \[\sqrt{\frac{2h}{g}}+\frac{h}{v}\]
D) \[\sqrt{\frac{h}{2g}}+\frac{2h}{v}\]
Correct Answer: C
Solution :
Distance travelled by stone in water,\[h=\frac{1}{2}g{{t}^{2}}\] Time taken by stone to reach water,\[t=\sqrt{\frac{2h}{g}}\] Time taken by sound to reach the top of well,\[t'=\frac{h}{v}\] \[\therefore \]Total time\[=\sqrt{\frac{2h}{g}}+\frac{h}{v}\]
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