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The radius of curvature of railway line ...

The radius of curvature of railway line at a place is 200 m. If the distance between the railsis1.6 m and the outer rail is raised by 0.08 m above the inner rail, the speed of the train for which there is no'side pressure on the railsis

A

5 `m//s`

B

10 `m//s`

C

15 `m//s`

D

20 `m//s`

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