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 g980 cm/s^(2) and velocity of sound is 350 m/s. Then depth of well is :

A stone is dropped into a well and sound of impact of stone with water

1.	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 g980 cm/s^(2) and velocity of sound is 350 m/s. Then depth of well is :
Answer» 19.6 m 9.8 m 30 m 7 m Solution :t = `t_(1) + t_(2)` . `t = sqrt((2h)/(g)) + (H)/(V)` . ` t = sqrt((2 xx 29.6)/(9.8)) + (19.6)/(350)= 2 + 0.056= 2.056`SEC Hence the correct CHOICE is (a ).

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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 g980 cm/s^(2) and velocity of sound is 350 m/s. Then depth of well is :

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