Who invented neutron ?
The neutron was discovered by
Which of the following isotopes is normally fissionable ?
Which of the following is true for a sample of isotope containing ${U^{235}}$ and ${U^{238}}$
The volume occupied by an atom is greater than the volume of the nucleus by a factor of about
If a ${H_2}$ nucleus is completely converted into energy, the energy produced will be around..........$MeV$