Physics - Modern Physics Question with Solution | TestHub

An electron, a doubly ionized helium ion ($H{e}^{++}$) and proton are having the same kinetic energy. The relation between their respective de-Broglie wavelength${\lambda }_{e^{*}}{\lambda }_{{\mathrm{He}}^{++}}$and${\lambda }_{\mathrm{p}}$is :