Question

In what time will a train 100 meter long cross an electric pole, if its speed be 144 km/hour?.

• A. 2.5 seconds
• B. 5 seconds
• C. 12.5 seconds
• D. 3 seconds

Answer 1

The correct option is A 2.5 seconds

Speed of the train $=144kmph=144\times \frac{5}{18}=40m/sec$

Length of electric pole $=100meter$

Time taken to cross the electric pole $=\frac{100}{40}$

$=2.5seconds$