Two nucleons are at a separation of $1 \times 10^{-15} \ m$. The net force between them is $F_1$ if both are neutrons,$F_2$ if both are protons,and $F_3$ if one is a proton and the other is a neutron. In such a case:

  • A
    $F_2 > F_1 > F_3$
  • B
    $F_1 = F_2 = F_3$
  • C
    $F_1 = F_2 > F_3$
  • D
    $F_1 = F_3 > F_2$

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