JEE Main 2020 · PhysicsNumerical answerNumerical valueHardMulti-step

JEE Main 9 January 2020, Shift 1, Physics Q21

Question 21 of 75 in this shift, Physics question 21 of 25, Section B.

The distance

x

covered by a paritcle in one dimensional motion varies with time t as

x^{2} = at^{2} + 2bt + c

. If the acceleration of the particle depends on

x

x^{-n}

, where n is an integer, the value of n is __________.

Official answer

3.00

NTA final key (Jan 2020).

Chapter: Motion in a Straight Line
Topic: Kinematics in 1D
Idea tested: Implicit Time-Position Equations

Same idea in other shifts

Asked 3× in all

31 Jan 2024, Shift 1 · Q32The relation between time 't' and distance 'x' is $t=\alpha x^2+\beta x$ , where $\alpha$ and $\beta$ are constants. The relation between…MediumSingle correct
25 Jul 2021, Shift 2 · Q4The relation between time t and distance $x$ for a moving body is given as $t = mx^2 + nx$ , where $m$ and $n$ are constants. The…MediumSingle 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 108 of the 174 JEE Main shifts held from 2017 to 2026.