1.

Two balls are dropped from heights `h` and `2h` respectively from the earth surface. The ratio of time of these balls to reach the earth is.A. `1 : sqrt(2)`B. `sqrt(2) : 1`C. `2 : 1`D. `1 : 4`

Answer» Correct Answer - A
`t = sqrt((2 h)/(g)) rArr (t_1)/(t_2) = sqrt((h_1)/(h_2)) = sqrt((1)/(2)) = (1)/(sqrt(2))`.


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