Which of the following statements is incorrect for nuclear forces?

Options

A. These are strongest in magnitude.
B. They are charge dependent.
C. They are effective only for short ranges.
D. They are from interaction of every nucleon with the nearest limited number of nucleons.

Explanation

To determine which statement about nuclear forces is incorrect, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A: They are strongest in magnitude.**
- Nuclear forces are indeed the strongest forces when compared to other fundamental forces (like gravitational and electromagnetic forces) within a very short range (on the order of 1 femtometer, which is \(10^{-15}\) meters). Thus, this statement is **true**.

2. **Statement B: They are charge dependent.**
- Nuclear forces are known to be charge independent. They act between nucleons (protons and neutrons) regardless of their charge. For example, neutrons do not carry any charge, yet they experience nuclear forces. Therefore, this statement is **false**.

3. **Statement C: They are effective only for short ranges.**
- Nuclear forces are indeed effective only over short distances, typically around 0.7 femtometers. Beyond this range, the strength of the nuclear force diminishes significantly. Hence, this statement is **true**.

4. **Statement D: They are from interaction of every nucleon within the nearest limited number of nucleons.**
- This statement is also true. Nuclear forces arise from the interactions between nucleons, and each nucleon interacts with its nearest neighbors. This limited range of interaction is a characteristic feature of nuclear forces.

### Conclusion:
From the analysis above, we find that:
- Statement A: True
- Statement B: False (this is the incorrect statement)
- Statement C: True
- Statement D: True

Thus, the incorrect statement regarding nuclear forces is **Statement B**.