JEE Main 2023PhysicsNuclear PhysicsMediumMCQ

JEE Main 2023Nuclear Physics Question with Solution

JEE Main 2023 (13 Apr Shift 2)

Question

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R

Assertion A : The binding energy per nucleon is practically independent of the atomic number for nuclei of mass number in the range 30 to 170.

Reason R : Nuclear force is short ranged.

In the light of the above statements, choose the correct answer from the options given below

Choose an option

Show full solutionCorrect option: B
Correct answer
BBoth A and R are true and R is the correct explanation of A

Step-by-step explanation

The binding energy for stable nuclei is always a positive number, as the nucleus must gain energy for the nucleons to move apart from each other. Nucleons are attracted to each other by the strong nuclear force. Binding energy per nucleon is almost constant in the range of 30-170. This is because nuclear energy is a short range force. It operates in the femto metre region.

Hence, this option is the correct one.

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About this question

This is a previous-year question from JEE Main 2023, covering the Nuclear Physics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.