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Saturday, 31 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
  1. 4 Apr 2026, Shift 2 · Q28At t=0t=0, a body of mass 100 g starts moving under the influence of a force (5i^+10j^)\left(5\hat i+10\hat j\right) N. After 2 s its position is…EasySingle correct
  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. 5 Apr 2024, Shift 1 · Q33A wooden block of mass 5 kg rests on a soft horizontal floor. When an iron cylinder of mass 25 kg is placed on the top of the block, the…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 108 of the 174 JEE Main shifts held from 2017 to 2026.