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Saturday, 31 October

JEE Main 2023 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 13 April 2023, Shift 1, Physics Q32

Question 32 of 90 in this shift, Physics question 2 of 30, Section A.

Two trains 'A' and 'B' of length 'll' and '4l4l' are travelling into a tunnel of length 'L' in parallel tracks from opposite directions with velocities 108 km/h and 72 km/h, respectively. If train 'A' takes 35s less time than train 'B' to cross the tunnel then, length 'L' of tunnel is : (Given L=60 lL = 60\,l)
  1. (1)1800 mOfficial answer
  2. (2)900 m
  3. (3)1200 m
  4. (4)2700 m

Official answer

Option 1

NTA final key.

Chapter
Motion in a Straight Line
Topic
Relative Velocity
Idea tested
Extended Bodies Overtaking and Crossing

Same idea in other shifts

Asked 2× in all
  1. 13 Apr 2023, Shift 2 · Q33A passenger sitting in a train A moving at 9090 km/h observes another train B moving in the opposite direction for 8 s. If the velocity of…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.