Draw a plot of potential energy of a pair of nucleons as a function of their separation . Write two important conclusions which you can draw regarding the nature of nuclear forces .

Explanation

### Step-by-Step Solution:

1. **Understanding the Variables**:
- The potential energy (U) of a pair of nucleons is plotted on the y-axis.
- The separation distance (r) between the nucleons is plotted on the x-axis.

2. **Graph Shape**:
- The graph typically shows a curve that starts from a high positive potential energy when the nucleons are very far apart (indicating no interaction).
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