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JEE Main 2023 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 13 April 2023, Shift 2, Physics Q33

Question 33 of 90 in this shift, Physics question 3 of 30, Section A.

A passenger sitting in a train A moving at

90

km/h observes another train B moving in the opposite direction for 8 s. If the velocity of the train B is

54

km/h, then length of train B is:

(1) $80$ m
(2) $120$ m
(3) $200$ m
(4) $320$ mOfficial answer

Official answer

Option 4

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

13 Apr 2023, Shift 1 · Q32Two trains 'A' and 'B' of length ' $l$ ' and ' $4l$ ' are travelling into a tunnel of length 'L' in parallel tracks from opposite directions…MediumSingle 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.