Suppose the magnitude of Nuclear force between two protons varies with the distance between them as shown in figure (4-Q1). Estimate the ratio "Nuclear force / Coulomb force" for (a) x = 8 fm (b) x = 4 fm, (c) x = 2 fm and (d) x = 1 fm (1 fm = 10–15 m).



We know coulomb’s force acting between two charges as –



Also charge on proton


C


and constant K =


a. When






b. When






c. When






d. When






2