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The force between a neutron and a proton inside the nucleus is :

The force between a neutron and a proton inside the nucleus is : Correct Answer Only nuclear attractive

CONCEPT:

  • Strong nuclear force: The strong attractive force which binds together the protons and neutrons in a nucleus is called a strong nuclear force.
    • This force cannot be an electrostatic force because positively charged protons strongly repel each other at such a small separation of the order 10-15 m.
    • This strong nuclear force is the strongest of all the fundamental forces, about 100 times stronger than the electromagnetic force.

Important properties of the strong nuclear force:

  1. It is the strongest interaction known in nature, which is about 1038 times stronger than the gravitational force.
  2. It is a short-range force that operates only over the size of the nucleus (= 10-15 m).
  3. It is basically an attractive force but becomes repulsive when the distance between the nucleons becomes less than 0.5 fermi (1 fermi =10-15 m).
  4. It varies inversely with some higher power (>2) of distance.
  5. It is a non-central and non-conservative force. 

EXPLANATION:

  • From the above, it is clear that the force between a neutron and a proton inside the nucleus is only nuclear attractive. Therefore option 1 is correct.

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