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Friday, 9 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 30 January 2024, Shift 2, Physics Q35

Question 35 of 90 in this shift, Physics question 5 of 30, Section A.

A block of mass 1 kg is pushed up a surface inclined to horizontal at an angle of 60∘60^\circ by a force of 10 N10\ N parallel to the inclined surface as shown in figure. When the block is pushed up by 10 m10\ m along inclined surface, the work done against frictional force is : [g=10 m/s2][g = 10\ m/s^2]

The figure, in words

Right-angled wedge with incline at 60 degrees to the horizontal, mu_s = 0.1; block M on the incline pushed up along the incline by a 10 N force parallel to the surface.
  1. (1)53 J5\sqrt{3}\ J
  2. (2)5 J5\ JOfficial answer
  3. (3)5×103 J5 \times 10^3\ J
  4. (4)10 J10\ J

Official answer

Option 2

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
  1. 5 Apr 2026, Shift 2 · Q28A mass of 1 kg is kept on a inclined plane with 30∘30^\circ inclination with respect to horizontal plane and it is at rest initially. Then…MediumSingle correct
  2. 29 Jan 2024, Shift 1 · Q34A 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…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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.