Correct Answer - Option 1 : 2.5 seconds
Given:
Length of the train = 100 meters
Speed of the train = 144 km/hr
Formula used:
Time = Distance/Speed
Calculation:
Time in second = 100/(144 × (5/18))
⇒ 100/40 = 2.5
∴ A train will take time 2.5 second to cross an electric pole