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What is the speed of an electron with kinetic energy of $120\;eV$ given $h= 6.63 \times 10^{-34} \;Js, \;m_e= 9 \times 10^{-31} kg,lev= 1.6 \times 10^{-19}\;J$

$\begin{array}{1 1} 6.53 \times 10^6\;km s^{-1} \\6.53 \times 10^6\;m/min \\ 6.53 \times 10^6\;m s^{-1} \\ 6.53 \times 10^6\;km/min \end{array} $

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