1.

A ball is projected from the bottom of a tower and is found to go above the tower and is caught by the thrower at the bottom of the tower after a time interval t_1 . An observer at the top of the tower sees the same ball go up above him and then come back at this level in a time interval t_2 . The height of the tower is

Answer»

`1/2 "gt"_1 t_2`
`("gt"_1t_2)/(8)`
`g/8 (t_1^2 - t_2^2)`
`g/2 (t_1 - t_2)^2`

Answer :C


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