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  1. A train 150m long passes a telegraphic post in 12 seconds. Find the speed of the train.(in km/hr)
    1. 50
    2. 12.5
    3. 25
    4. 45
Correct Option: D

Distance covered by train in crossing a telegraphic post = length of train

∴  Speed of train =
Distance
Time

=
150
 m./sec.
12

=
150
 ×
18
kmph
125

= 45 kmph


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