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Q.

A train of length 200 m passes over a bridge of length 600 m. The time taken by the train to cross the bridge with a uniform speed of 36 kmph is

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a

800 s

b

80 s

c

60 s

d

20 s

answer is B.

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Detailed Solution

Length of train = 200m

Length of bridge = 600m

Total distance = 200 + 600 = 800 m

v=36kmph=36×518=2×5=10m/s

v=10ms−1

v=st⇒t=sv−80010

t=80s

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