NCHMCT JEE 2018 Question Paper with solutions for online practice

Question : 15 of 200

Marks: +1, -0

A person sees a train passing over 1 km long bridge. The length of the train is half that of bridge. If the train clears the bridge in 2 minutes, the speed of the train is

50 km/hr
45 km/hr
60 km/hr
30 km/hr

Validate

Solution:

Total distance

= 1\km + 1/2\km = 3/2\km

Time

=2\min=2/60\hrs=1/30\hrs

Speed of the train

=\text "Distance"/\text "Time"

={3/2}/{1/50}=3/2×30/1

= 45

km/hr.

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