JEE Main 2023 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 6 April 2023, Shift 1, Physics Q59

Question 59 of 90 in this shift, Physics question 29 of 30, Section B.

A particle of mass 10 g moves in a straight line with retardation

2x

, where

x

is the displacement in SI units. Its loss of kinetic energy for above displacement is

\left(\frac{10}{x}\right)^{-n}

J. The value of n will be ____________

Official answer

NTA final key.

Chapter: Work, Energy and Power
Topic: Work and Kinetic Energy
Idea tested: Work-Energy Theorem

Same idea in other shifts

Asked 7× in all

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9 Apr 2024, Shift 1 · Q35A particle of mass m moves on a straight line with its velocity increasing with distance according to the equation $v=\alpha\sqrt{x}$ ,…EasySingle correct
25 Jul 2022, Shift 1 · Q34A body of mass $0.5$ kg travels on straight line path with velocity $v=(3x^2+4)$ m/s. The net workdone by the force during its…EasySingle correct
29 Jun 2022, Shift 1 · Q38A particle of mass 500 gm is moving in a straight line with velocity $v = bx^{5/2}$ . The work done by the net force during its…MediumSingle correct
2 Apr 2017 (offline) · Q4A time dependent force $F=6t$ acts on a particle of mass 1 kg. If the particle starts from rest, the work done by the force during 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. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.