A negative meson $\left({\mathrm{\mu }}^{-}\right)$ is $204$ times heavier than electron and a proton is $1836$ times heavier than electron. The ratio of specific charges ($\raisebox{1ex}{$\mathrm{e}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{m}$}\right.$ ratio) of negative meson and proton is :