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Friday, 9 October

JEE Main 2026 · PhysicsMultiple choiceSingle correctHardMulti-step

JEE Main 5 April 2026, Shift 1, Physics Q30

Question 30 of 75 in this shift, Physics question 5 of 25, Section A.

A wedge YY with mass of 10 kg and all frictionless surfaces and the inclined surface making 37∘37^\circ with horizontal. A block XX with mass 2 kg is placed at the highest point of the wedge as shown in figure is at rest. At t=0t = 0 wedge (YY) is pulled toward right with constant force (ff) of 24 N. Taking the block XX at rest at t=0t = 0, the time taken by it to slide down 8.8 m on the slope, while YY is on the move, is ________ s. (take tan⁡(37∘)=3/4\tan(37^\circ) = 3/4 and g=10 m/s2g = 10\ \mathrm{m/s^2})

The figure, in words

Right-triangle wedge Y on a horizontal floor with the 37 degree angle at the bottom right; block X sits at the top of the incline (left side); horizontal force f = 24 N acts on the wedge towards the right.
  1. (1)2Official answer
  2. (2)4
  3. (3)2\sqrt{2}
  4. (4)222\sqrt{2}

Official answer

Option 1

NTA final key.

Chapter
Laws of Motion
Topic
Newton's Laws of Motion
Idea tested
Wedge (Normal Contact) Constraint

Same topic in other shifts

All Newton's Laws of Motion questions
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  2. 6 Apr 2026, Shift 1 · Q29Two blocks (PP and QQ) with respectively masses 2 kg and 1.5 kg are joined by a massless thread. These blocks are mounted on a…HardSingle correctHas a figure
  3. 2 Apr 2025, Shift 2 · Q29A body of mass 1 kg is suspended with the help of two strings making angles as shown in figure. Magnitudes of tensions T1T_1 and T2T_2,…EasySingle correctHas a figure
  4. 7 Apr 2025, Shift 2 · Q28An object with mass 500 g moves along xx-axis with speed v=4xv=4\sqrt{x} m/s. The force acting on the object is :MediumSingle correct
  5. 8 Apr 2025, Shift 2 · Q27A body of mass 2 kg moving with velocity of v⃗in=3i^+4j^ ms−1\vec{v}_{in} = 3\hat{i} + 4\hat{j}\ \mathrm{ms^{-1}} enters into a constant force field of…EasySingle correct
  6. 6 Apr 2024, Shift 2 · Q34A body of weight 200 N is suspended from a tree branch through a chain of mass 10 kg. The branch pulls the chain by a force equal to (if…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.