Question

Calculate the de-Broglie wavelength associated with an electron of energy 5MeV.​

Answer 1

where, E is the Energy, m is the mass of the electrons, and v is the velocity of the Electrons. ⇒ v = 1.86 × 10⁹ m/s. where h is the plank's constant = 6.63 × 10⁻³⁴ J-s. ⇒ λ = 0.39 × 10⁻¹² m.