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A stone is dropped into a well in which the level of water is \( h \) below the top of the well. If \( v \) is velocity of sound, the time Tafter which the splash is heard is given by.
(1) \( \mathrm{T}=\frac{2 \mathrm{~h}}{\mathrm{v}} \)
(2) \( \mathrm{T}=\sqrt{\frac{2 \mathrm{~h}}{\mathrm{~g}}}+\frac{\mathrm{h}}{\mathrm{v}} \)
(3) \( \mathrm{T}=\sqrt{\frac{2 \mathrm{~h}}{\mathrm{v}}}+\frac{\mathrm{h}}{\mathrm{g}} \)
(4) \( \mathrm{T}=\sqrt{\frac{\mathrm{h}}{2 \mathrm{~g}}}+\frac{2 \mathrm{~h}}{\mathrm{v}} \)
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