जॉइन Examsbookउत्तर : 4. "48 sec"
Two trains are moving in opposite directions at 60 km/hr and 90 km/hr. Their lengths are 1.10 km and 0.9 km respectively. The time taken by the slower train to cross the faster train in seconds is ?5
प्र: Two trains are moving in opposite directions at 60 km/hr and 90 km/hr. Their lengths are 1.10 km and 0.9 km respectively. The time taken by the slower train to cross the faster train in seconds is ?
- 142 secfalse
- 244 secfalse
- 346 secfalse
- 448 sectrue
- उत्तर देखेंउत्तर छिपाएं
- Workspace
उत्तर : 4. "48 sec"
व्याख्या :
Answer: D) 48 sec Explanation: Relative speed = 60 + 90 = 150 km/hr. = 150 x 5/18 = 125/3 m/sec. Distance covered = 1.10 + 0.9 = 2 km = 2000 m. Required time = 2000 x 3/125 = 48 sec.