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From a tower of height H, a particle is ...

From a tower of height H, a particle is thrown vertically upwards with a speed u. The time taken by the particle, to hit the ground, is n times that taken by it to reach the highest point of its path. The relation between H, u and n is

A

`2gH = n^2 u^r`

B

`gH=(n-2)^2u^2`

C

`2gH = nu^2(n-2)`.

D

gH =(n -2 )u^2`.`

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