JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 30 January 2024, Shift 2, Physics Q47

Question 47 of 90 in this shift, Physics question 17 of 30, Section A.

In a nuclear fission reaction of an isotope of mass

M

, three similar daughter nuclei of same mass are formed. The speed of a daughter nuclei in terms of mass defect

\Delta M

will be :

(1) $\frac{\Delta M c^2}{3}$
(2) $c\sqrt{\frac{2\Delta M}{M}}$ Official answer
(3) $c\sqrt{\frac{3\Delta M}{M}}$
(4) $\sqrt{\frac{2c\Delta M}{M}}$

Official answer

Option 2

NTA final key.

Chapter: Nuclei
Topic: Fission and Fusion
Idea tested: Fission Fragment Kinematics

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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.