A particle with kinetic energy $\;10\;MeV\;$ and charge $\;4e\;$ is heading towards a stationary nucleus of atomic number 100 . Calculate the distance of closest approach ?

Question

$(a)\;5.76\times10^{-14}\;m\qquad(b)\;57.6\times10^{-14}\;m\qquad(c)\;0.576\times10^{-14}\;m\qquad(d)\;None$