JEE PHYSICS MCQ: NUCLEI

For a nucleus ${ }_Z^A X$ having mass number ${A}$ and atomic number ${Z}$

A. The surface energy per nucleon $\left(b_s\right)=a_1 A^{2 / 3}$

B. The coulomb contribution to the binding energy $b_c=-a_2 \frac{Z(Z-1)}{A^{4 / 3}}$

C. The volume energy $b_v=a_3 A$

D. Decrease in the binding energy is proportional surface area.

E. While estimating the surface energy, it is assumed that each nucleon interacts with 12 nucleons,
( $a_1, a_2$ and $a_3$ are constants)

Choose the most appropriate answer form the options given below;