A stone dropped from a building of height `h` and it reaches after `t` second on the earth. From the same building if two stones are thrown (one upwards and other downwards) with the same speed and they reach the earth surface after `t_(1)` and `t_(2)` seconds, respectively, then

Options

A. `t = t_(1)- t_(2)`
B. `t = (t_(1) +t_(2))/(2)`
C. `t = sqrt(t_(1)t_(2))`
D. `t = t_(1)^(2) t_(2)^(2)`

Answer

C