A fast moving neutron collides elastically and head on with a nucleus of N_(7)^(14). The percentage of energy lost by the neutron during elastic collision is nearly

A fast moving neutron collides elastically and head on with a nucleus

1.	A fast moving neutron collides elastically and head on with a nucleus of N_(7)^(14). The percentage of energy lost by the neutron during elastic collision is nearly
Answer» 0.2 0.25 0.5 0.8 Answer :B