RRB Technician Grade 3 previous year question
Two trains of lengths 120 m and 180 m running in opposite directions at speeds of 60 km/h and 75 km/h, respectively. In how many seconds will they completely cross each other?
Asked in RRB Technician Grade 3 (06 Mar 2026 Shift 1) · Quantitative Aptitude
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Correct answer: (B) 8 seconds
Relative speed (opposite directions) = (60+75) km/h = 135 km/h = 37.5 m/s. Total length to cross = 120+180 = 300 m. Time = 300/37.5 = 8 seconds.
हिंदी में प्रश्न
120 m और 180 m लंबाई की दो ट्रेनें विपरीत दिशाओं में क्रमशः 60 km/h और 75 km/h की चाल से गतिमान हैं। वे एक-दूसरे को कितने सेकंडों में पूरी तरह से पार कर लेंगी?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) 8 सेकंड
विपरीत दिशाओं में सापेक्ष चाल = (60+75) किमी/घं = 135 किमी/घं = 37.5 मी/से। पार करने की कुल लंबाई = 120+180 = 300 मी। समय = 300/37.5 = 8 सेकंड।
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