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# A body projected vertically upwards crosses a point twice in its journey at a height h just after $t_1$ and $t_2$ seconds. Maximum height reached by the body is :

$\begin {array} {1 1} (a)\;\frac{g}{4} (t_1+t_2)^2 & \quad (b)\;g\bigg(\frac{t_1+t_2}{4}\bigg)^2 \\ (c)\;2g \bigg(\frac{t_1+t_2}{4}\bigg)^2 & \quad (d)\;\frac{g}{4} (t_1t_2) \end {array}$

$(C)\;2g \bigg(\frac{t_1+t_2}{4}\bigg)^2$
Hence C is the correct answer.