Correct Answer - Option 3 : 108 kmph
Given :
Length of a train = 150 m
the train passes a pole in = 5 sec.
Formula used :
Speed of train (s) = distance travelled (d)/time taken (T)
1 m/s = 18/5 km/hr
Calculation :
speed of train = 150/5 = 30 m/s
The speed of the train = 30 × 18/5 = 108 km/hr
∴ The required answer is 108 km/hr.