Nucleus: Practice Problem & Solution

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Nucleus. Understanding the underlying formula is key to arriving at the correct answer below:

Nuclear density is defined as mass per unit volume. Since mass is proportional to A and volume is proportional to $R^3 \propto A$, the density is proportional to $A/A = 1$. It is a constant independent of A.