JEE Main 2025 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 7 April 2025, Shift 2, Physics Q28

Question 28 of 75 in this shift, Physics question 3 of 25, Section A.

An object with mass 500 g moves along

x

-axis with speed

v=4\sqrt{x}

m/s. The force acting on the object is :

(1)5 N
(2)4 NOfficial answer
(3)8 N
(4)6 N

Official answer

Option 2

NTA final key.

Chapter: Laws of Motion
Topic: Newton's Laws of Motion
Idea tested: F=ma for Single Body

Same idea in other shifts

Asked 3× in all

4 Apr 2026, Shift 2 · Q28At $t=0$ , a body of mass 100 g starts moving under the influence of a force $\left(5\hat i+10\hat j\right)$ N. After 2 s its position is…EasySingle correct
16 Mar 2021, Shift 2 · Q23A body of mass 2 kg moves under a force of $(2\hat{i}+3\hat{j}+5\hat{k})$ N. It starts from rest and was at the origin initially. After 4…EasyNumerical value

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.