Multiple choice

How much time will take by a 100 metre long train, moving at a speed of 30 km/hr. to pass a man standing at a station?

  1. $14 sec.$
  2. $12 sec.$
  3. $10 sec.$
  4. $16 sec.$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Train length = 100m, speed = 30 km/hr = 30×(5/18) = 25/3 m/sec. Time to pass a stationary man = distance/speed = 100 ÷ (25/3) = 12 seconds. The man's position is irrelevant - only the train's length matters for passing a point.

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