Q 12-13-127JEE MainJEE Main 2019 (8 Apr, Shift 2)Easy
The ratio of mass densities of nuclei of $^{40}\text{Ca}$ and $^{16}\text{O}$ is close to
Answer: (A) $1$
Nuclear radius $R = R_0A^{1/3}$, so volume $\propto A$ and mass $\propto A$. Nuclear density is therefore the same for all nuclei, and the ratio is about $1$.
Solution by Sreeraj P, M.Sc Physics