एक ट्रेन एक खम्भे को 5 सेकंड में पार करती है और सुरंग को 20 सेकंड में पार करती है। यदि ट्रेन की चाल 90 मी/से. है, तो सुरंग की लम्बाई ज्ञात कीजिए।

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SSC GD Constable Memory Based Test (12 Jan 2023 Shift 1)
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  1. 1350 मीटर
  2. 900 मीटर
  3. 1200 मीटर
  4. 800 मीटर

Answer (Detailed Solution Below)

Option 1 : 1350 मीटर
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Detailed Solution

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दिया गया है:

खम्भे को पार करने में लगा समय = 5 सेकंड

सुरंग को पार करने में लगा समय = 20 सेकंड

प्रयुक्त सूत्र:

चाल = दूरी/समय

गणना:

माना सुरंग की लंबाई x मीटर और ट्रेन की लंबाई y मीटर है।

समय = दूरी/चाल

⇒ 5 = (y/90)

⇒ y = 450 मीटर

सुरंग पार करने का समय = दूरी/चाल

⇒ 20 = (y + x)/90

⇒ 20 × 90 = (450 + x)

⇒ x = 1800 - 450 = 1350

∴ सुरंग की लंबाई 1350 मीटर है।

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-> The SSC GD Notification 2026 will be released in October 2025 and the exam will be scheduled in the month of January and February 2026.

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-> The candidates who will be appearing for the 2025 cycle in the exam must attempt the SSC GD Constable Previous Year Papers. Also, attempt SSC GD Constable Mock Tests.  

-> UPSC Prelims Result 2025 Date Out soon @https://upsconline.nic.in/

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