JEE Main 2025 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 8 April 2025, Shift 2, Physics Q44

Question 44 of 75 in this shift, Physics question 19 of 25, Section A.

For a nucleus of mass number A and radius R, the mass density of nucleus can be represented as

(1) $A^3$
(2) $A^{\frac{2}{3}}$
(3) $A^{\frac{1}{3}}$
(4)Independent of AOfficial answer

Official answer

Option 4

NTA final key.

Chapter: Nuclei
Topic: Nuclear Binding Energy
Idea tested: Nuclear Radius and Density

Same idea in other shifts

Asked 4× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.