JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 8 April 2024, Shift 1, Physics Q33

Question 33 of 90 in this shift, Physics question 3 of 30, Section A.

A stationary particle breaks into two parts of masses

m_A

and

m_B

which move with velocities

v_A

and

v_B

respectively. The ratio of their kinetic energies (

K_B:K_A

) is :

(1) $v_B:v_A$ Official answer
(2) $m_B:m_A$
(3) $m_Bv_B:m_Av_A$
(4) $1:1$

Official answer

Option 1

NTA final key.

Chapter: System of Particles and Rotational Motion
Topic: Collisions
Idea tested: Momentum in Explosions

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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.