Multiple choice

Speed of a train is 44 Km/h and its length is 322 metre. It crosses another train coming from opposite direction at 28 Km/h in 25 seconds. Find the length of second train. एक ट्रेन की गति 44 किलोमीटर / घंटा है और इसकी लंबाई 322 मीटर है यह 28 किलोमीटर/ घंटा की गति से विपरीत दिशा से आने वाली एक दूसरी ट्रेन को 25 सेकंड में पार करती है। दूसरी ट्रेन की लंबाई ज्ञात करें।

  1. 125 metre 125 मीटर

  2. 178 metre 178 मीटर

  3. 240 metre 240 मीटर

  4. 210 metre 210 मीटर

  5. None of these इनमे से कोई नहीं
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B Correct answer
Explanation

When trains cross in opposite directions, their relative speed is the sum of individual speeds. Relative speed = 44 + 28 = 72 km/h = 72 × 5/18 = 20 m/s. Total distance covered in 25 seconds = 20 × 25 = 500 meters. This distance equals the sum of both train lengths. First train length = 322m. Second train length = 500 - 322 = 178m. The second train is 178 meters long.

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