A neutron of kinetic energy 65eV collides inelasticallywith a single ionized helium atom at rest.It is scattered at an angle of 90^(@) with respect of its original direction. (i) Find the allowed values of the energy of the neutron & that of the atom after collision. (ii) If the atom gets de-excited subsequently by emitting radiation, find the frequencies of the emitted radiation. (Given : Mass of the atom = 4 xx( mass of neutron ) , ionization energy of H atom = 13.6 eV )

A neutron of kinetic energy 65eV collides inelasticallywith a single i

1.	A neutron of kinetic energy 65eV collides inelasticallywith a single ionized helium atom at rest.It is scattered at an angle of 90^(@) with respect of its original direction. (i) Find the allowed values of the energy of the neutron & that of the atom after collision. (ii) If the atom gets de-excited subsequently by emitting radiation, find the frequencies of the emitted radiation. (Given : Mass of the atom = 4 xx( mass of neutron ) , ionization energy of H atom = 13.6 eV )
Answer» Answer :(i) ALLOWED valeus of ENERGY of neutron `= 6.36eV` and `0.312 EV`; Allowedvalues of energy of He atom `= 17.84` eV and 16.328 eV eV, (ii) `18.23 xx 10^(14) Hz, 9.846xx 10^(15) Hz, 11.6 xx 10^(15) Hz`

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