(A) 160 Sec
(B) 465 Sec
(C) 231 Sec
(D) 310 Sec
Correct Option is: C
Speed of the train = 270 km/hr.
Converting the speed into m/sec
Speed = 270 km/hr = 270 x 5/18 m/sec = 75 m/sec
First, we have to find the length of the train
Let the length of the train be X km.
Given that, the time taken to cover 700 meters = 240 seconds.
We can have, distance/speed = time
x+700/75 = 240
x+700 = 18000
x = 17300 m
The time taken by the train of length 17300 meters to cross a standing Pole at 75 m/s =( 17300/75)seconds
= 231 seconds.
Hence the answer is 231 sec(approx.)