SSC GD Constable previous year question
Two trains of lengths 150 m and 350 m are moving in the same direction at speeds of 60 km/h and 120 km/h respectively. How much time (in minutes) will the faster train (coming from behind) take to completely cross the other train?
Asked in SSC GD Constable 2025: 07 Feb 2025 Shift 1 (Morning) · Quantitative Aptitude
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Correct answer: (C) 0.5
Relative speed = (120−60) km/h = 50/3 m/s. Total distance = 500 m. Time = 500 ÷ (50/3) = 30 s = 0.5 min.
हिंदी में प्रश्न
150 m और 350 m लंबाई वाली दो रेलगाड़ियाँ एक ही दिशा में क्रमशः 60 km/h और 120 km/h की चाल से गतिमान हैं। पीछे से आ रही तेज चाल वाली रेलगाड़ी द्वारा दूसरी रेलगाड़ी को पूरी तरह से पार करने में कितना समय (मिनटों में) लगेगा?
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सही उत्तर: (C) 0.5
सापेक्ष चाल = (120−60) km/h = 50/3 m/s। कुल दूरी = 500 m। समय = 500 ÷ (50/3) = 30 सेकंड = 0.5 मिनट।
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