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The strong nuclear force between a neutron and a proton in a zero orbital angular momentum state is denoted by Fnp(r), where r is the separation between them. Similarly, Fnn (r) and Fpp (r) denote the forces between a pair of neutrons and protons, respectively, in zero orbital momentum state. Which of the following is true on average if the inter-nucleon distance is 0.2 fm < r < 2 fm?
  • a)
    Fnp is attractive for triplet spin state, and Fnn, Fpp are always repulsive
  • b)
    Fnn and Fnp are always attractive and Fpp is repulsive in the triplet spin state
  • c)
    Fpp and Fnp are always attractive and Fnn is always repulsive
  • d)
    All three forces are always attractive
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The strong nuclear force between a neutron and a proton in a zero orbi...
  • Inside the nucleus the interaction between neutron-neutron and neutron-proton is
  • always attractive due to nuclear force whereas the force between proton-proton it is repulsive due
  • to coulombic interaction.
Thus, Fnn and Fnp are always attractive and Fpp is repulsive
Hence the correct answer is option 2.
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Most Upvoted Answer
The strong nuclear force between a neutron and a proton in a zero orbi...
Explanation:

Inter-nucleon Forces:
- The strong nuclear force between a neutron and a proton in a zero orbital angular momentum state is denoted by Fnp(r).
- Fnn(r) and Fpp(r) denote the forces between a pair of neutrons and protons, respectively, in a zero orbital momentum state.

Inter-nucleon Distance:
- Given that the inter-nucleon distance is 0.2 fm < r="" />< 2="" />

Correct Option:
- Option B is correct: Fnn and Fnp are always attractive, and Fpp is repulsive in the triplet spin state.

Explanation of Correct Option:
- In the given range of inter-nucleon distance, Fnn and Fnp forces are always attractive due to the strong nuclear force.
- For the triplet spin state, Fnp is attractive as it leads to the formation of a deuteron, while Fnn is also attractive as it contributes to the stability of the nucleus.
- Fpp is repulsive in the triplet spin state to ensure the stability of the nucleus by preventing excessive accumulation of protons in a small space.

Conclusion:
- Therefore, in the specified range of inter-nucleon distance, Fnn and Fnp forces are attractive, and Fpp is repulsive in the triplet spin state.
Free Test
Community Answer
The strong nuclear force between a neutron and a proton in a zero orbi...
Fnn = nuclear force
Fpp= nuclear / coulombic force
Fnp= nuclear force
Fpn = nuclear force

Nuclear force is always attractive
Coulombic force can be attractive or repulsive
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The strong nuclear force between a neutron and a proton in a zero orbital angular momentum state is denoted by Fnp(r), where r is the separation between them. Similarly, Fnn(r) and Fpp(r) denote the forces between a pair of neutrons and protons, respectively, in zero orbital momentum state. Which of the following is true on average if the inter-nucleon distance is 0.2 fm < r < 2 fm?a)Fnpis attractive for triplet spin state, and Fnn, Fppare always repulsiveb)Fnnand Fnpare always attractive and Fppis repulsive in the triplet spin statec)Fppand Fnpare always attractive and Fnnis always repulsived)All three forces are always attractiveCorrect answer is option 'B'. Can you explain this answer?
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The strong nuclear force between a neutron and a proton in a zero orbital angular momentum state is denoted by Fnp(r), where r is the separation between them. Similarly, Fnn(r) and Fpp(r) denote the forces between a pair of neutrons and protons, respectively, in zero orbital momentum state. Which of the following is true on average if the inter-nucleon distance is 0.2 fm < r < 2 fm?a)Fnpis attractive for triplet spin state, and Fnn, Fppare always repulsiveb)Fnnand Fnpare always attractive and Fppis repulsive in the triplet spin statec)Fppand Fnpare always attractive and Fnnis always repulsived)All three forces are always attractiveCorrect answer is option 'B'. Can you explain this answer? for EmSAT Achieve 2025 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about The strong nuclear force between a neutron and a proton in a zero orbital angular momentum state is denoted by Fnp(r), where r is the separation between them. Similarly, Fnn(r) and Fpp(r) denote the forces between a pair of neutrons and protons, respectively, in zero orbital momentum state. Which of the following is true on average if the inter-nucleon distance is 0.2 fm < r < 2 fm?a)Fnpis attractive for triplet spin state, and Fnn, Fppare always repulsiveb)Fnnand Fnpare always attractive and Fppis repulsive in the triplet spin statec)Fppand Fnpare always attractive and Fnnis always repulsived)All three forces are always attractiveCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The strong nuclear force between a neutron and a proton in a zero orbital angular momentum state is denoted by Fnp(r), where r is the separation between them. Similarly, Fnn(r) and Fpp(r) denote the forces between a pair of neutrons and protons, respectively, in zero orbital momentum state. Which of the following is true on average if the inter-nucleon distance is 0.2 fm < r < 2 fm?a)Fnpis attractive for triplet spin state, and Fnn, Fppare always repulsiveb)Fnnand Fnpare always attractive and Fppis repulsive in the triplet spin statec)Fppand Fnpare always attractive and Fnnis always repulsived)All three forces are always attractiveCorrect answer is option 'B'. Can you explain this answer?.
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