JEE Main 2023 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 10 April 2023, Shift 2, Physics Q40

Question 40 of 90 in this shift, Physics question 10 of 30, Section A.

A person travels

x

distance with velocity

v_1

and then

x

distance with velocity

v_2

in the same direction. The average velocity of the person is v, then the relation between v,

v_1

and

v_2

will be.

(1) $v = \frac{v_1 + v_2}{2}$
(2) $v = v_1 + v_2$
(3) $\frac{1}{v} = \frac{1}{v_1} + \frac{1}{v_2}$
(4) $\frac{2}{v} = \frac{1}{v_1} + \frac{1}{v_2}$ Official answer

Official answer

Option 4

NTA final key.

Chapter: Motion in a Straight Line
Topic: Kinematics in 1D
Idea tested: Average Speed Special Cases

Same idea in other shifts

Asked 4× in all

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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.