AP Police Constable practice question
Two trains are moving in opposite directions at speeds of 54 km/h and 42 km/h. If their lengths are 168 m and 132 m respectively, how much time will they take to cross each other completely?
From a AP Police Constable General Awareness practice set · General Awareness
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Correct answer: (C) 11.25 seconds
Relative speed = (54+42) km/h = 96×5/18 m/s = 26.67 m/s. Time = (168+132)/26.67 = 11.25 seconds.
हिंदी में प्रश्न
दो ट्रेनें विपरीत दिशाओं में क्रमशः 54 किमी/घंटा और 42 किमी/घंटा की गति से चल रही हैं। यदि उनकी लंबाई क्रमशः 168 मीटर और 132 मीटर है, तो उन्हें पूरी तरह से पार करने में कितना समय लगेगा?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 11.25 सेकंड
सापेक्ष गति = (54+42) किमी/घंटा = 26.67 मीटर/सेकंड। समय = (168+132)/26.67 = 11.25 सेकंड।
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