Trains (रेलगाड़ी) – Zero Level से SSC CGL Level तक Shortcuts + Tricks + Example

July 26, 2026

ह रहा 🚆 Trains (रेलगाड़ी) – Zero Level से SSC CGL Level तक Shortcuts + Tricks + Examples 👇

🚆 1. Basic Concept (Zero Level)

👉 Train questions में 3 चीज़ें होती हैं:

Speed (गति)
Time (समय)
Distance (दूरी)

📌 Formula:
👉 Distance = Speed × Time

⚡ 2. सबसे Important Conversion Trick

👉 1 km/hr = 5/18 m/s
👉 1 m/s = 18/5 km/hr

🔥 Shortcut:

km/hr → m/s → × 5/18
m/s → km/hr → × 18/5

🚀 3. Train Crossing Basics

🧍‍♂️ Case 1: Train crosses a Pole/Man

👉 Distance = Length of Train

📌 Formula:
👉 Time = Length / Speed

✍️ Example:

👉 Train length = 180 m
👉 Speed = 54 km/hr

✔ Speed = 54 × 5/18 = 15 m/s

✔ Time = 180 / 15 = 12 sec

🚶 Case 2: Train crosses a Platform

👉 Distance = Train length + Platform length

✍️ Example:

👉 Train = 150 m
👉 Platform = 100 m
👉 Speed = 25 m/s

✔ Total distance = 250 m
✔ Time = 250 / 25 = 10 sec

🔥 4. Relative Speed Concept (SSC Level)

🚆🚆 Same Direction

👉 Relative speed = Difference

🚆🚆 Opposite Direction

👉 Relative speed = Sum

✍️ Example:

👉 Train A = 60 km/hr
👉 Train B = 40 km/hr

✔ Same direction → 20 km/hr
✔ Opposite → 100 km/hr

⚡ 5. Train Crossing Another Train

👉 Distance = Length1 + Length2

✍️ Example:

👉 Train A = 100 m
👉 Train B = 150 m
👉 Speeds = 36 km/hr & 54 km/hr

✔ Convert:
36 = 10 m/s
54 = 15 m/s

✔ Opposite direction → 25 m/s

✔ Distance = 250 m

✔ Time = 250 / 25 = 10 sec

🧠 6. SSC Shortcut Tricks

🔹 Trick 1: Direct Formula

👉 Time = (Sum of lengths) / (Relative speed)

🔹 Trick 2: Speed Ratio Trick

👉 Distance same → Time ∝ 1/Speed

🔹 Trick 3: Pole vs Platform

👉 Pole → only train length
👉 Platform → train + platform

🎯 7. Advanced SSC CGL Level

🚆 Passing moving man

👉 If same direction → subtract speed
👉 If opposite → add speed

✍️ Example:

👉 Train speed = 60 km/hr
👉 Man speed = 6 km/hr

✔ Same → 54 km/hr
✔ Opposite → 66 km/hr

📌 8. Important Formulas Revision

👉 Time = Distance / Speed
👉 Relative Speed:

Same → Subtract
Opposite → Add

👉 Distance:

Pole → Train length
Platform → Train + Platform
Train → Sum of lengths

⚠️ 9. Common Mistakes

❌ km/hr को m/s में convert नहीं करना
❌ Relative speed गलत लेना
❌ Platform length भूल जाना

🏁 10. Quick Revision Trick

👉 “Pole → Length, Platform → Add, Train → Add Both”
👉 “Same → Minus, Opposite → Plus”

🎁 BONUS: Ultra Short Trick (Exam Time)

👉 Time = Total Length / Relative Speed

बस यही याद रखो → 90% सवाल solve 👍

अगर आप चाहें तो मैं आपके लिए:
✅ 500 MCQ Trains PDF (SSC + BPSC)
✅ Previous Year Questions with Solution
✅ Full Chapter Test Series (Printable)
भी बना सकता हूँ 🚀

Trains (रेलगाड़ी) – 500 MCQs (SSC + BPSC) – Hindi

प्रश्न 1. एक ट्रेन की लंबाई 101 मीटर है और उसकी गति 42 किमी/घंटा है। वह एक खंभे को पार करने में कितना समय लेगी?