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Which is a non-central force?

(a) Electrostatic force

(b) Nuclear force

(c) Gravitational force

(d) Spring force

I had been asked this question in quiz.

This interesting question is from Atomic Masses and Composition of Nucleus topic in chapter Nucleus of Physics – Class 12

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Right answer is (b) Nuclear force

Easy explanation: Nuclear force is a non-central force. They are dependent on the spin of the nuclei, and not on whether the nucleons are protons or neutrons. The tensor force exists between two nucleons, and therefore, it has a tensor component.

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