Question

The de Broglie wavelength of a particle is approximately the same as that of a photon with the same energy –

• A. The energy of the particle is much greater than its rest energy
• B. The energy of the particle is much less than its rest energy
• C. The energy of the particle equals its rest energy
• D. Date insufficient to arrive at a conclusion

Answer 1

Answer: (A)

The energy of the particle is much greater than its rest energy

Answer 2

$\lambda = \frac{h}{p}$ ̃ l_Ph. = $\frac{hc}{E}$ ̃ l_Particle = $\frac{h}{\sqrt{2mE}}$