(A) 16
(B) 32
(C) 45
(D) 64
Correct Option is: B
Speed of the train = 204 km/hr.
We have to find the time in seconds, so convert the speed in the unit of m/sec.
Therefore 204 km/hr = 204 x 5/18 m/s
= 1020/18 m/s
Length of the train = 1800 meters.
we have to find the time taken by the train to cover 1800 meters at 1020/18 m/sec
Time = distance/speed
= 1800/(1020/18)sec
= (1800*18/1020)sec
= 32 sec (approx.)