Q 12-13-009NEETJEE MainEAMCET 2008 (Engineering)Easy
Let $F_{pp}$, $F_{pn}$ and $F_{nn}$ denote the magnitudes of the nuclear force by a proton on a proton, by a proton on a neutron and by a neutron on a neutron respectively, when the separation is less than one fermi. Then
Answer: (B) $F_{pp} = F_{pn} = F_{nn}$
The nuclear force is charge independent: at the same short separation it is the same for proton–proton, proton–neutron and neutron–neutron pairs. (The electrostatic repulsion between two protons is a separate force.)
Solution by Sreeraj P, M.Sc Physics