
Find the energy liberated in and decays and in capture, if the masses of the parent atom the daughter atom and an electron are known.( is speed of light)

Important Questions on ATOMIC AND NUCLEAR PHYSICS

Evaluate the amount of heat produced during a day by active preparation of mass . The beta-particles are assumed to possess an average kinetic energy equal to of the highest possible energy of the given decay. The half-life of is hours.
Mass of is and of is , energy equivalent of neutrinos or electron is
and is equivalent to of energy, speed of light .

Taking the values of the atomic masses from the tables, calculate the kinetic energies of a positron and a neutrino emitted by nucleus for the case, when the daughter nucleus does not recoil.
Mass defect due to positron is , energy equivalent of neutrinos or electron is
and is equivalent to of energy, speed of light .

Find the kinetic energy of the recoil nucleus in the positron decay of nucleus for the case when the energy of the positron is maximum.
energy equivalent of neutrinos or electron is
and is equivalent to of energy, speed of light .

energy equivalent of neutrinos or electron is
and is equivalent to of energy, speed of light .


(a) in a head-on collision.
(b) in scattering at right angles.

Find the greatest possible angle through which a deuteron is scattered as a result of elastic collision with an initially stationary proton.
