Question
Running at a speed of 60km/h a train passed through a 1.5 km long tunnel in 2 min. What is the length of the train?
Answer: Option B
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Suppose length of the train be lm
Time = Distance/speed
=> 1/30 = (l + 1500)/60000
Speed of the train = 60 km/h = 60 x 1000 = 60000m/h
Length of tunnel = 1.5km = 1500m
Time taken by train = 2min = (1/30)h
L =500
Hence the length of the train =500m
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