JEE Main 2024 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 30 January 2024, Shift 2, Physics Q51

Question 51 of 90 in this shift, Physics question 21 of 30, Section B.

A vector has magnitude same as that of

\vec{A} = 3\hat{i} + 4\hat{j}

and is parallel to

\vec{B} = 4\hat{i} + 3\hat{j}

. The

x

and

y

components of this vector in first quadrant are

x

and 3 respectively where

x =

________.

Official answer

NTA final key.

Chapter: Motion in a Plane
Topic: Kinematics in 2D
Idea tested: Vector Component Resolution

Same idea in other shifts

Asked 6× in all

8 Apr 2024, Shift 1 · Q51Three vectors $\overrightarrow{OP}$ , $\overrightarrow{OQ}$ and $\overrightarrow{OR}$ each of magnitude $A$ are acting as shown in figure.…EasyNumerical valueHas a figure
15 Apr 2023, Shift 1 · Q37A vector in $x-y$ plane makes an angle of 30° with y-axis. The magnitude of y-component of vector is $2\sqrt{3}$ . The magnitude of…EasySingle correct
26 Aug 2021, Shift 1 · Q18The magnitude of vectors $\overrightarrow{OA}$ , $\overrightarrow{OB}$ and $\overrightarrow{OC}$ in the given figure are equal. The…MediumDiagram basedHas a figure
27 Aug 2021, Shift 1 · Q4The resultant of these forces $\overrightarrow{OP}$ , $\overrightarrow{OQ}$ , $\overrightarrow{OR}$ , $\overrightarrow{OS}$ and…MediumSingle correctHas a figure
4 Sep 2020, Shift 1 · Q3Starting from the origin at time t=0, with initial velocity $5\hat{j}$ ms $^{-1}$ , a particle moves in the $x-y$ plane with a constant…EasySingle correct

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.