A proton, a neutron, an electron and an α -particle have same energy. If λ p , λ n , λ e and λ α are the de Broglie's wavelengths of proton, neutron, electron and α particle respectively, then ch

Question

A proton, a neutron, an electron and an α -particle have same energy. If λ p , λ n , λ e and λ α are the de Broglie's wavelengths of proton, neutron, electron and α particle respectively, then choose the correct relation from the following

TestHub · Accepted Answer

The de-Broglie wavelength λ = h 2 m ( K . E . ) where, h and K . E . are constant λ ∝ 1 m m = Mass of the particle Thus, with increasing mass of particle de-Broglie wavelength decreases. Order of mass m e < m p < m n < m α Order of de-Broglie wavelength is λ a < λ n < λ p < λ e

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