AP Police SI previous year question
A 180m train crosses a pole in 18s. After detaching coaches, length reduces to 150m. Time to cross a 120m bridge at the same speed (s) is
Asked in AP Police SI Prelims: 2018 (Paper I & II) · Quantitative Aptitude
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Correct answer: (A) 27
Speed = 180/18 = 10 m/s. Distance = 150+120 = 270m. Time = 27s.
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हिंदी में प्रश्न
180m लंबी एक रेलगाड़ी एक खंभे को 18 सेकंड में पार करती है। कुछ डिब्बे अलग करने के बाद उसकी लंबाई घटकर 150m रह जाती है। उसी चाल से 120m लंबे पुल को पार करने में लगने वाला समय (सेकंड) है
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सही उत्तर: (A) 27
गति = 180/18 = 10 मी/से। दूरी = 150+120 = 270 मी। समय = 27 सेकंड।
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