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Friday, 9 October

JEE Main 2021 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 18 March 2021, Shift 1, Physics Q24

Question 24 of 90 in this shift, Physics question 24 of 30, Section B.

As shown in the figure, a particle of mass 10 kg is placed at a point A. When the particle is slightly displaced to its right, it starts moving and reaches the point B. The speed of the particle at B is xx m/s. (Take g=10g = 10 m/s2^2) The value of 'x' to the nearest integer is __________.

The figure, in words

Smooth curved track from A (height 10 m above the horizontal surface) down to B (lowest point, height 5 m above the horizontal surface), rising to C on the right.

Official answer

10

NTA final key.

Chapter
Work, Energy and Power
Topic
Work and Kinetic Energy
Idea tested
Conservation of Mechanical Energy

Same idea in other shifts

Asked 2× in all
  1. 3 Apr 2025, Shift 1 · Q28A particle is released from height S above the surface of the earth. At certain height its kinetic energy is three times its potential…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.