A stone is dropped into a well 78.4 m deep. After what time the splash of water be heard ? Velocity of sound in air is 350 m/s
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If the splash is hear 4.23 seconds after a stone is dropped into a well, 78.4 metres deep, find the velocity of sound in air. Total time after which splash is heard =4.23s, If t1= time taken by stone to hit the water surface in the well.
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