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 topic in other shifts

All Relative Velocity questions

4 Apr 2026, Shift 2 · Q27Two cars $A$ and $B$ are moving in the same direction along a straight line with speeds 100 km/h and 80 km/h, respectively such that car…MediumSingle correct
2 Apr 2025, Shift 1 · Q29A river is flowing from west to east direction with speed of $9\ \mathrm{km\,h^{-1}}$ . If a boat capable of moving at a maximum speed of…EasySingle correct
16 Mar 2021, Shift 2 · Q22A swimmer can swim with velocity of 12 km/h in still water. Water flowing in a river has velocity 6 km/h. The direction with respect to…EasyNumerical value
18 Mar 2021, Shift 1 · Q27A person is swimming with a speed of 10 m/s at an angle of 120° with the flow and reaches to a point directly opposite on the other side…EasyNumerical value
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
6 Sep 2020, Shift 2 · Q2When a car is at rest, its driver sees rain drops falling on it vertically. When driving the car with speed $v$ , he sees that rain drops…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 42 of the 174 JEE Main shifts held from 2017 to 2026.