Q170 / 180 · KCET 2025 · Physics

Which of the following statements is incorrect with reference of 'Nuclear force'?

  • A
    Nuclear force becomes attractive for nucleon distances larger than 0.8 fm
  • B
    Nuclear force becomes repulsive for nucleon distances less then 0.8 fm
  • Correct answer
    C
    Nuclear force is always attractive
  • D
    Potential energy is minimum, if the separation between the nucleons is 0.8 fm

Solution

The strong nuclear force is generally attractive but becomes repulsive at very short distances (less than 0.7 fm). While it's primarily an attractive force, this repulsion at close range prevents the nucleus from collapsing due to the constant attraction.

Hence, the correct answer is option: 'C'.

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