Learn

Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceDiagram basedEasyData or graph

JEE Main 29 June 2022, Shift 2, Physics Q46

Question 46 of 90 in this shift, Physics question 16 of 30, Section A.

In the given figure, the block of mass mm is dropped from the point ‘AA’. The expression for kinetic energy of block when it reaches point ‘BB’ is

The figure, in words

A hatched rectangle at the top with a dashed horizontal arrow from its lower edge labelled A. Two vertical lines drop from it. A dot on the right-hand vertical line has a dashed horizontal arrow labelled B; a double-headed vertical arrow labelled y0 spans from the hatched block down to the level of B (between the right-hand line and the dashed A-to-B level). A long vertical arrow on the left labelled y runs from the hatched block down to a horizontal line labelled Ground.
  1. (1)12mg y02\frac{1}{2}mg\,y_0^{2}
  2. (2)12mg y2\frac{1}{2}mg\,y^{2}
  3. (3)mg (y−y0)mg\,(y-y_0)
  4. (4)mgy0mgy_0Official 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. 5 Apr 2024, Shift 1 · Q34A 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…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.