Q16. A proton and an electron have the same de Broglie wavelength. If $K _ { p }$ and $K _ { e }$ be the kinetic energies of proton and electron respectively, then choose the correct relation :\\
(1) $K _ { p } > K _ { e }$\\
(2) $\mathrm { K } _ { \mathrm { p } } < \mathrm { K } _ { \mathrm { e } }$\\
(3) $K _ { p } = K _ { e }$\\
(4) $\mathrm { K } _ { \mathrm { p } } = \mathrm { K } _ { \mathrm { e } } { } ^ { 2 }$