NEET UG 2025 · Physics · Question 21
NEET 2025 Physics, question 21
Question 21 of the NEET 2025 paper (code 45) is a Physics question from Motion in a Straight Line. Its idea, Relative Velocity 1D, was asked twice, in 2017 and 2025, across NEET 2017–2026. The NTA final answer key gives option 4.
Updated 2026-10-08
Q21 · Physics
Two cities X and Y are connected by a regular bus service with a bus leaving in either direction every T min. A girl is driving scooty with a speed of 60 km/h in the direction X to Y notices that a bus goes past her every 30 minutes in the direction of her motion, and every 10 minutes in the opposite direction. Choose the correct option for the period T of the bus service and the speed (assumed constant) of the buses.
- 19 min, 40 km/h
- 225 min, 100 km/h
- 310 min, 90 km/h
- 415 min, 120 km/hOfficial answer
Official answer: option 4 · NTA final answer key
Same idea
Relative Velocity 1D, in other papers
NEET asked this idea twice, in 2017 and 2025. The other question below.
- 2017 Q40Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time . On…One-line MCQ · Medium
The chapter
Motion in a Straight Line in ten years of NEET
13 questions from 2017–2026, asked in 9 of 10 papers, about 1.2 a paper. Kinematics in 1D alone had 13.