JEE Main 2021 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 26 February 2021, Shift 2, Physics Q12

Question 12 of 90 in this shift, Physics question 12 of 30, Section A.

A scooter accelerates from rest for time

t_1

at constant rate

a_1

and then retards at constant rate

a_2

for time

t_2

and comes to rest. The correct value of

\frac{t_1}{t_2}

will be :

(1) $\frac{a_1}{a_2}$
(2) $\frac{a_2}{a_1}$ Official answer
(3) $\frac{a_1 + a_2}{a_1}$
(4) $\frac{a_1 + a_2}{a_2}$

Official answer

Option 2

NTA final key.

Chapter: Motion in a Straight Line
Topic: Kinematics in 1D
Idea tested: Uniform Acceleration Equations

Same idea in other shifts

Asked 8× in all

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18 Mar 2021, Shift 1 · Q5The position, velocity and acceleration of a particle moving with a constant acceleration can be represented by :EasyDiagram basedHas a figure

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.