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A stone is dropped into a well and sound...

A stone is dropped into a well and sound of impact of stone with water is heard after 2.056 second of the release of stone from top If g 980 cm/`s^(2)` and velocity of sound is 350 m/s. Then depth of well is :

A

19.6 m

B

9.8 m

C

30 m

D

7 m

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The correct Answer is:
A
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