Q17. A proton, an electron and an alpha particle have the same energies. Their de-Broglie wavelengths will be compared as :\\
(1) $\lambda _ { \alpha } < \lambda _ { \mathrm { p } } < \lambda _ { \mathrm { e } }$\\
(2) $\lambda _ { \mathrm { e } } > \lambda _ { \alpha } > \lambda _ { \mathrm { p } }$\\
(3) $\lambda _ { \mathrm { p } } > \lambda _ { \mathrm { e } } > \lambda _ { \alpha }$\\
(4) $\lambda _ { \mathrm { p } } < \lambda _ { \mathrm { e } } < \lambda _ { \alpha }$