CBSE Class 12 · 2011 · Modern PhysicsVery Short Answer

Any two of the following:
(i) Nuclear force is the strongest of the fundamental forces at short range and is attractive for separations of about $0.8$–$2$ fm.
(ii) It is short-ranged ($\sim 2$–$3$ fm) and shows saturation (a nucleon interacts only with its nearest neighbours).
(iii) It is charge-independent (the force between $p$–$p$, $n$–$n$ and $p$–$n$ pairs is the same).