Draw a plot of potential energy of a pair of nucleons as a function of their separations. Mark the regions where the nuclear force (i) attractive and (ii)repulsive. Write any two characteristic features of nuclear forces.
For r<OB, repulsive (1/2) marks
For r>OB force is attractive (1/2) marks
Nuclear forces are
i) very strong
ii) charge dependent (1/2) marks
iii) show saturation (1/2) marks
iv) spin dependent