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Distance between two places is 200 km. a...

Distance between two places is 200 km. `alpha` a of steel is `12xx10^(-6)//""^(@)C`. Total space that must be left between steel rails to allow for a change of temperature from `36^(@)F` to `117^(@)F` is

A

1.08 km

B

0.108 km

C

10.8 km

D

0.0108 km

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The correct Answer is:
B
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