A steel wire 2 mm in diameter is stretch...

A steel wire 2 mm in diameter is stretched between two clamps, when its temperature is `40^@C`. Calculate the tension in the wire, when its temperature fails to `30^@C`. Given the coefficient of linear expansion of steel `11 xx 10^-6//^@C` and Y for steel =`21 xx10^10 N//m^2`.

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