Physics

Size of the Nucleus

नाभिक का आकार

In Class 12 Physics, this topic from Chapter 13: Nuclei explains how the size of an atomic nucleus is described and measured. Students learn the nuclear-radius relation R = R₀A^(1/3), where A is the mass number, and understand why nuclear volume is proportional to A. The topic connects this result with nearly constant nuclear density, compares nuclei of different elements, and clarifies the distinction between the tiny nucleus and the much larger atom. It also builds a foundation for understanding nuclear structure and reactions.