JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 29 January 2024, Shift 1, Physics Q34

Question 34 of 90 in this shift, Physics question 4 of 30, Section A.

A block of mass 100 kg slides over a distance of 10 m on a horizontal surface. If the co-efficient of friction between the surfaces is 0.4, then the work done against friction (in J) is :

(1) $4000$ Official answer
(2) $4500$
(3) $4200$
(4) $3900$

Official answer

Option 1

NTA final key.

Chapter: Work, Energy and Power
Topic: Work and Kinetic Energy
Idea tested: Work Done by Friction

Same idea in other shifts

Asked 3× in all

5 Apr 2026, Shift 2 · Q28A mass of 1 kg is kept on a inclined plane with $30^\circ$ inclination with respect to horizontal plane and it is at rest initially. Then…MediumSingle correct
30 Jan 2024, Shift 2 · Q35A block of mass 1 kg is pushed up a surface inclined to horizontal at an angle of $60^\circ$ by a force of $10\ N$ parallel to the…EasySingle correctHas 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 42 of the 174 JEE Main shifts held from 2017 to 2026.