1.

A train cross a pole in 12 seconds. If the speed of the train is 54 km/hr then length of train will be (1) 648 meter (2) 150 meter (3) 180 meter (4) 100 meter

Answer»

(3) 180 meter

54 km/hr = ( 54 x 5/18) m/s = 15 m/s

∴ Length of train = (15 x 12) m

= 180 m 



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