Multiple choice

200 meter long train crosses a bridge with the speed of 54 km/hrs. in 30 sec. Find the length of bridge ?

  1. 125 m.

  2. 300 m.

  3. 450 m.

  4. Can't be determined

  5. None of these
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Speed = 54 km/hr = 54 × 5/18 = 15 m/s. In 30 seconds, the train covers 15 × 30 = 450 meters. This equals train length + bridge length. So 450 = 200 + bridge, giving bridge length = 250 meters. Since 250m is not among options A-C, option E (None of these) is correct.

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