A neutron of kinetic `6.5 eV` collides inelastically with a singly ionized helium atom at rest. It is scattered at an angle `90^(@)` with respect to its original direction.
Find the maximum allowed value of energy of the He atom?

A neutron of kinetic 6.5 eV collides inelastically with a singly ionized helium atom at rest. It is scattered at an angle 90^(@) with respect to its original direction. Find the minimum allowed value of energy of the neutron.

A photon of energy 10.5eV is allowed to interact with a hydrogen atom in its ground state. Then :

A neutron with an energy of 4.6 MeV collides elastically with proton and is retarded. Assuming that upon each collision the neutron is deflected by 45^(@) , find the number of collisions which will reduce its energy to 0.23 eV .

A neutron having kinetic energy 12.5eV collides with a hydrogen atom at rest negect the difference in mass between the neutron and the hydrogen atom and assume that the neutron does not leave its of motion find the posible kinetic energy of the neutron after the event

A neutron in a nuclear reactor collides head on elastically with the nucleus of a carbon atom initially at rest. The fraction of kinetic energy transferred from the neutron to the carbon atom is