Physics - Modern Physics Question with Solution | TestHub

(A) true - the short range of the nuclear force limits nuclear size. (B) true - $\beta$-decay of a neutron is a weak-interaction process. (C) true - large nuclei need $N>Z$ so the strong force can offset Coulomb repulsion. (D) false - the nuclear force is short-range and saturates; a nucleon interacts only with its immediate neighbours, not all nucleons equally.

Hence options (A), (B), (C).