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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceDiagram basedEasyConceptual

JEE Main 5 April 2024, Shift 1, Physics Q34

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

A body of mass 50 kg is lifted to a height of 20 m from the ground in the two different ways as shown in the figures. The ratio of work done against the gravity in both the respective cases, will be :

The figure, in words

Two inclined planes of height h = 20 m and angle 30 degrees. Case-1: mass M = 50 kg pulled straight up vertically along the height. Case-2: M = 50 kg moved along the ramp (inclined at 30 degrees) by a person.
  1. (1)1:21:2
  2. (2)2:12:1
  3. (3)3:2\sqrt{3}:2
  4. (4)1:11:1Official answer

Official answer

Option 4

NTA final key.

Chapter
Work, Energy and Power
Topic
Work and Kinetic Energy
Idea tested
Work Done by Gravity (Path Independence)

Same idea in other shifts

Asked 3× in all
  1. 29 Jun 2022, Shift 2 · Q46In the given figure, the block of mass mm is dropped from the point ‘AA’. The expression for kinetic energy of block when it reaches…EasyDiagram basedHas a figure
  2. 22 Jul 2021, Shift 2 · Q14A porter lifts a heavy suitcase of mass 80 kg and at the destination lowers it down by a distance of 80 cm with a constant velocity.…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.