A stone is dropped into a well if the depth of the water surface below the top of the well is h

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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 T after which the splash is heard is given byA. √2 h/gB. √2 h/g+h/vC. √2 h/g+h/vD.