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Friday, 9 October

JEE Main 2025 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 3 April 2025, Shift 2, Physics Q28

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

A particle moves along the xx-axis and has its displacement xx varying with time t according to the equation: x=c0 (t2−2)+c (t−2)2x = c_0\,(t^2 - 2) + c\,(t - 2)^2 where c0c_0 and c are constants of appropriate dimensions. Then, which of the following statements is correct?
  1. (1)the initial velocity of the particle is 4c
  2. (2)the acceleration of the particle is 2c02c_0
  3. (3)the acceleration of the particle is 2c
  4. (4)the acceleration of the particle is 2 (c+c0)2\,(c + c_0)Official answer

Official answer

Option 4

NTA final key.

Chapter
Motion in a Straight Line
Topic
Kinematics in 1D
Idea tested
Calculus in Kinematics

Same idea in other shifts

Asked 2× in all
  1. 6 Apr 2024, Shift 2 · Q57A particle moves in a straight line so that its displacement xx at any time tt is given by x2=1+t2x^2=1+t^2. Its acceleration at any time tt…MediumNumerical 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.