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Saturday, 31 October

JEE Main 2026 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 4 April 2026, Shift 2, Physics Q27

Question 27 of 75 in this shift, Physics question 2 of 25, Section A.

Two cars AA and BB are moving in the same direction along a straight line with speeds 100 km/h and 80 km/h, respectively such that car AA is moving ahead of car BB. A person in car BB throws a stone with a speed vv so that it hits the car AA with a speed of 5 m/s. The value of vv is ________ km/h.
  1. (1)18
  2. (2)28
  3. (3)38Official answer
  4. (4)48

Official answer

Option 3

NTA final key.

Chapter
Motion in a Straight Line
Topic
Relative Velocity
Idea tested
Relative Motion in 1D

Same idea in other shifts

Asked 3× in all
  1. 1 Feb 2024, Shift 2 · Q32Train A is moving along two parallel rail tracks towards north with speed 7272 km/h and train B is moving towards south with speed 108108…EasySingle correct
  2. 2 Sep 2020, Shift 1 · Q2Train A and train B are running on parallel tracks in the opposite directions with speeds of 36 km/hour and 72 km/hour, respectively. A…EasySingle 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.