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5.A ball is allowed to fall from top of ...

5.A ball is allowed to fall from top of a building.If `t_(1)` is time taken to fall first `(1)/(4)` th of its height and `t_(2)` is time taken to fall last `(1)/(4)` th of its height then, `t_(2)/t_(1)` is
(1) `(sqrt(3-2))/(1),`
(2) `(sqrt(3)-sqrt(2))/(1)`
(3) `(sqrt((2)-(3))/(1)),`
(4) `(2-sqrt(3))/(1)`

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