At temperature T , the average kinetic energy of any particle is 3 2 kT . The de Broglie wavelength follows the order:

Question

At temperature T , the average kinetic energy of any particle is 3 2 kT . The de Broglie wavelength follows the order:, Visible photon > thermal electron > thermal neutron., Thermal neutron > visible photon > thermal electron., Thermal neutron > thermal electron > visible photon., Visible photon > thermal neutron > thermal electron.

MARKS App · Accepted Answer

λ n = h 2 m E ( E = kT for thermal neutron) λ n = h 2 m n k T = 30.835 T = 30.835 17.32 = 1.78 Å λ e = 150 V Kinetic energy for electron in hydrogen atom = 13 . 60 eV V = 13 . 6 V λ e = 150 13.6 = 3.32 Å λ p h o t o n v i s i b l e r a n g e = 6000 Å λ p h o t o n > λ e l e c t r o n > λ n e u t r o n

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