A train crosses a pole in 30 seconds. The speed of the train is 120 kmph. Find the length of the train.

Correct option is C

Speed = 120 kmph
To convert kmph to m/s, multiply by 5/18.
Speed = 120 x (5/18) m/s = 600/18 m/s = 100/3 m/s
When a train crosses a pole, the distance it covers is equal to the length of the train.
Distance = Speed x Time
Length of the train = (100/3 m/s) x 30 seconds
Length of the train = 100 x 10 = 1000 meters
Length of the train = 1000 meters = 1000/1000 km = 1 km
Therefore, the length of the train is 1 km.
The correct answer is (c) 1.00 km.