JEE Main 2021 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 17 March 2021, Shift 1, Physics Q27

Question 27 of 90 in this shift, Physics question 27 of 30, Section B.

The angular speed of truck wheel is increased from 900 rpm to 2460 rpm in 26 seconds. The number of revolutions by the truck engine during this time is __________. (Assuming the acceleration to be uniform).

Official answer

728

NTA final key.

Chapter: System of Particles and Rotational Motion
Topic: Kinematics in 2D
Idea tested: Kinematic Equations for Angular Motion

Same topic in other shifts

All Kinematics in 2D questions

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27 Jan 2024, Shift 1 · Q32Position of an ant (S in metres) moving in Y-Z plane is given by $S = 2t^2\hat{j} + 5\hat{k}$ (where t is in second). The magnitude and…EasySingle correct
27 Jan 2024, Shift 1 · Q51A particle starts from origin at t = 0 with a velocity $5\,\hat{i}$ m/s and moves in $x$ - $y$ plane under action of a force which produces…MediumNumerical value
30 Jan 2024, Shift 2 · Q51A 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 $y$ …EasyNumerical value
31 Jan 2024, Shift 1 · Q51A body starts falling freely from height $H$ hits an inclined plane in its path at height $h$ . As a result of this perfectly elastic…HardNumerical 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.