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Two nucleons are at a separation of one Fermi. Protons have a charge of +1.6×10−19C. The net nuclear force between them is F1, if both are neutrons, F2, if both are protons F3, if one is proton and the other is neutron, Then :
  • a)
    F1 = F2 > F3
  • b)
    F1 = F2 = F3
  • c)
    F1 < />2 < />3
  • d)
    F1 > F2 > F3
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Two nucleons are at a separation of one Fermi. Protons have a charge ...
Explanation:

  • The nuclear force is the force between nucleons, i.e., protons and neutrons, in the nucleus of an atom.

  • The nuclear force is a strong force, and its range is very short, about 1 Fermi (1 Fermi = 10^-15m).

  • The nuclear force is attractive, i.e., it tends to pull nucleons towards each other.

  • The magnitude of the nuclear force depends on the distance between nucleons and whether they are protons or neutrons.

  • If both nucleons are neutrons or protons, the net nuclear force between them is the same, i.e., F1 = F2.

  • If one nucleon is a proton and the other is a neutron, the net nuclear force between them is less than F1 and F2, i.e., F3 < F1 and F2.

  • The reason for this is that protons and neutrons have different charges, and hence, they interact differently with each other.

  • The strong nuclear force is mediated by the exchange of mesons, which are particles that transmit the force between nucleons.

  • The exchange of mesons depends on the distance between nucleons and their charges, and hence, determines the magnitude of the nuclear force.

  • Therefore, the correct option is B, i.e., F1 = F2 = F3.

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Community Answer
Two nucleons are at a separation of one Fermi. Protons have a charge ...
Nuclear forces are charge independent so,
F1 = F2 = F3
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Two nucleons are at a separation of one Fermi. Protons have a charge of +1.6×10−19C. The net nuclear force between them is F1, if both are neutrons, F2, if both are protons F3, if one is proton and the other is neutron, Then :a)F1 = F2 > F3b)F1 = F2 = F3c)F1 2 3d)F1 > F2 > F3Correct answer is option 'B'. Can you explain this answer?
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