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  1. A train 300 m long is running with a speed of 54 km/hr. In what time will it cross a telephone pole?
    1. 20 seconds
    2. 15 seconds
    3. 17 seconds
    4. 18 seconds
Correct Option: A

Speed of train = 54 kmph

=
54 × 5
 m/sec = 15 m/sec
18

Required time =
Length of trains
Speed of train

=
300
= 20 seconds
15


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