Dual Nature Of Radiation

The kinetic energy of an electron, \(\alpha\)-particle and a proton are given as \(4 \mathrm{~K}, 2 \mathrm{~K}\) and \(\mathrm{K}\) respectively. The de-Broglie wavelength associated with electron \((\lambda \mathrm{e}), \alpha\)-particle \(((\lambda \alpha)\) and the proton \((\lambda p)\) are as follows: