JEE Main 2022 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 28 June 2022, Shift 1, Physics Q55

Question 55 of 90 in this shift, Physics question 25 of 30, Section B.

The position vector of 1 kg object is

\vec{r} = \left(3\hat{i} - \hat{j}\right)

m and its velocity

\vec{v} = \left(3\hat{j} + \hat{k}\right)\ \mathrm{ms^{-1}}

. The magnitude of its angular momentum is

\sqrt{x}

Nm where x is ____________.

Official answer

NTA final key.

Chapter: System of Particles and Rotational Motion
Topic: Angular Momentum
Idea tested: Angular Momentum of Particle

Same idea in other shifts

Asked 3× in all

2 Apr 2026, Shift 1 · Q29The position of an object having mass $0.1$ kg as a function of time $t$ is given as $\vec r=\left(10t^2\hat i+5t^3\hat j\right)$ m. At…MediumOther
25 Jul 2021, Shift 1 · Q25A particle of mass ' $m$ ' is moving in time ' $t$ ' on a trajectory given by $\vec{r}=10\alpha t^2\hat{i}+5\beta(t-5)\hat{j}$ Where $\alpha$ …MediumNumerical value

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 108 of the 174 JEE Main shifts held from 2017 to 2026.