JEE Main 2023 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 12 April 2023, Shift 1, Physics Q53

Question 53 of 90 in this shift, Physics question 23 of 30, Section B.

For a rolling spherical shell, the ratio of rotational kinetic energy and total kinetic energy is

\frac{x}{5}

. The value of

x

is ______

Official answer

NTA final key.

Chapter: System of Particles and Rotational Motion
Topic: Moment of Inertia
Idea tested: MOI of Standard Shapes

Same idea in other shifts

Asked 5× in all

6 Apr 2026, Shift 1 · Q31A solid sphere of radius 4 cm and mass 5 kg is rotating (rotation axis is passing through the centre of the sphere) with an angular…MediumSingle correct
25 Jun 2022, Shift 2 · Q54Moment of Inertia (M.I.) of four bodies having same mass ‘ $M$ ’ and radius ‘ $2R$ ’ are as follows : $\mathrm{I}_1$ = M.I. of solid sphere…MediumNumerical value
25 Jul 2021, Shift 2 · Q22A solid disc of radius 20 cm and mass 10 kg is rotating with an angular velocity of 600 rpm, about an axis normal to its circular plane…EasyNumerical value
9 Jan 2020, Shift 1 · Q22One end of a straight uniform 1 m long bar is pivoted on horizontal table. It is released from rest when it makes an angle $30^{\circ}$ …MediumNumerical valueHas a figure

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.