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A stone is dropped into a well in which the level of
\( \mathrm{P} \) water is \( \mathrm{h} \) below the top of the well. If \( v \) is velocity

W of sound, the time \( T \) after which the splash is heard is given by.
(1) \( T=\frac{3 h}{v} \)
(2) \( T=\sqrt{\frac{h}{4 g}}+\frac{2 h}{v} \)
(3) \( T=\sqrt{\frac{6 h}{v}}+\frac{h}{2 g} \)
(4) \( T=\sqrt{\frac{2 h}{g}}+\frac{h}{v} \)
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