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  1. A passenger train 150m long is travelling with a speed of 36 km/ hr. If a man is cycling in the direction of train at 9 km/hr., the time taken by the train to pass the man is
    1. 10 sec
    2. 15 sec
    3. 18 sec
    4. 20 sec
Correct Option: D

Relative speed of train
= (36 – 9) kmph = 27 kmph

=
27 × 5
m/sec
18

=
15
m/sec
2

∴  Required time =
Length of the train
Relative speed

=
150 × 2
= 20 seconds
15



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