Question

Draw a graph showing the variation of de Broglie wavelength of a particle of charge q and mass m with accelerating potential. Proton and deuteron have the same de Broglie wavelengths. Explain which has more kinetic energy.

Answer 1

Using relation E = `(h^(2))/(2mlambda^(2))" here " lambda and h` are same for protons and decuterons so `Ealpha1//m` . Deuteron with higher mass will have lower energy.