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A stone dropped from the top of a tower...

A stone dropped from the top of a tower of height 300 m high splashes into the water of a pond near the base of the tower. When is the splash heard at the top ? Given that the speed of sound in air is `340ms^(-1)? (g=9.8ms^(-2)`).

Text Solution

Verified by Experts

The correct Answer is:
`8.707 s`
`h=(1)/(2)g t_(1)^(2)rArr t_(1)=sqrt((2h)/(g))and h=vt_(2),t_(2)=(h)/(v)=(300)/(340)`
`:. t=t_(!)+t_(2)=8.707 sec`
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Knowledge Check

  • A stone is dropped into a pond from the top of the tower of height h. If v is the speed of sound in air, then the sound of splash will be heard at the top of the tower after a time

    A
    `sqrt((2h)/g)+h/v`
    B
    `sqrt((2h)/g)-h/v`
    C
    `sqrt((2h)/g)`
    D
    `sqrt((2h)/g)+(2h)/v`

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