A ball is thrown vertically upwards from the top of a tower of height h with velocity v. The ball strikes the ground after

Question

$\begin{array}{1 1} \large\frac{v}{g} \normalsize \bigg[ 1+ \sqrt {1+ \frac{2gh}{v^2}}\bigg] \\ \large\frac{v}{g} \normalsize \bigg[ 1- \sqrt {1+ \frac{2gh}{v^2}}\bigg]\\\large\frac{v}{g} \normalsize \bigg[ 1+ \sqrt {1+ \frac{2gh}{v^2}}\bigg]^{1/2}\\\large\frac{v}{g} \normalsize \bigg[ 1- \frac{2gh}{v^2}\bigg]^{1/2}\end{array} $