Question

a photon and an electron have the same de-broglie wavelength, which one has higher total energy?

Answer 1

At very high momentum (shortwavelength) the total energy will be dominated by the kinetic energy of the particle. Again, since KE at a given momentum is inversely proportional to mass then theelectron will have the greater total energy. ... A photon and electron has the same de Broglie wavefront.

Answer 2

electron because its speed is minimum than photon and since total energy is inversely proprtional to speed that's why energy of electron is maximum