2020 · Q19
An electron and a photon have same de Broglie wavelength. It implies that they have the same
general-sciencephysics-mechanics
- Alinear momentum
- Benergy
- Cspeed
- Dangular momentum
Explanation
de Broglie's relation λ = h/p ties wavelength directly to momentum: identical de Broglie wavelengths mean identical linear momenta. An electron (with rest mass) and a massless photon carrying the same momentum have different energies (p²/2m versus pc) and different speeds, so B and C are wrong; angular momentum is unrelated to the wavelength.