The time taken by a train 160 m long, running at 72 km/hr,

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The time taken by a train 160 m long, running at 72 km/hr, in crossing an electric pole is

1. 8 seconds
2. 9 seconds
3. 6 seconds
4. 4 seconds

Correct Option: A

Distance covered in crossing a pole = Length of train
Speed of train = 72 kmph

=		72 × 5		m./sec.
		18

= 20 m./sec.

∴ Required time =	160
	20

= 8 seconds