Rankers Physics

Nucleus: Practice Problem & Solution

If the nuclear force between two protons, two neutrons and between proton and neutron is denoted by $ F_{pp} $, $ F_{nn} $ and $ F_{pn} $ respectively, then (1990)
$ F_{pp} \approx F_{nn} \approx F_{pn} $
$ F_{pp} \neq F_{nn} $ and $ F_{pp} = F_{pn} $
$ F_{pp} = F_{nn} = F_{pn} $
$ F_{pp} \neq F_{nn} \neq F_{pn} $

Solution Explained:

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

The strong nuclear force is charge-independent. Therefore, the strong interaction is identical for proton-proton, neutron-neutron, and proton-neutron pairs, rendering them approximately equal ($ F_{pp} \approx F_{nn} \approx F_{pn} $) when ignoring minor Coulombic repulsion.

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