A photon electron having the same De Broglie wavelength Which of them moves fast posses - Physics - Dual Nature Of Radiation And Matter

Question

A photon & electron having the same De Broglie wavelength Which
of them moves fast & posses more Kinetic energy Justify

Vipra Mishra · Accepted Answer

Solution
K E
 =12p2mp=2mKλ =hp =h2mKp =hλK=h22mλ2If λ is constant then p is constantmpvp =meveAsvpve=memp <  1So vp < veAlso if λ is constantK α 1mTherefore KpKe=memp <  1SoKp <Ke

A photon & electron having the same De Broglie wavelength .Which of them moves fast & posses more Kinetic energy .Justify