Find the time taken by a train 200 m long, running at 60 km/h, to cross a signal post.
A14 sec
B1 min
C30 sec
D12 sec
Answer & Solution
Correct answer: D. 12 sec
1. Convert speed: 60 km/h = 60 × 5/18 = 50/3 m/s.
2. To cross a post, the train covers its own length, 200 m.
3. Time = distance / speed = 200 ÷ (50/3) = 200 × 3/50.
4. Time = 12 seconds.
_Source: RRB Group D CEN-02/2018 PYQ, Q.93._