JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 29 June 2022, Shift 1, Physics Q32

Question 32 of 90 in this shift, Physics question 2 of 30, Section A.

A body of mass M at rest explodes into three pieces, in the ratio of masses

1 : 1 : 2

. Two smaller pieces fly off perpendicular to each other with velocities of

30\ \mathrm{ms^{-1}}

and

40\ \mathrm{ms^{-1}}

respectively. The velocity of the third piece will be :

(1) $15\ \mathrm{ms^{-1}}$
(2) $25\ \mathrm{ms^{-1}}$ Official answer
(3) $35\ \mathrm{ms^{-1}}$
(4) $50\ \mathrm{ms^{-1}}$

Official answer

Option 2

NTA final key (2022 Session 1).

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.