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