A steel scale measures the length of a copper wire as 80.0 cm, when bo – InterviewSolution

1.	A steel scale measures the length of a copper wire as 80.0 cm, when both are at 20o C (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40o C? (Given αsteel=11;=17×10−6pero C)
Answer» A steel scale measures the length of a copper wire as 80.0 cm, when both are at $20^{o} C$ (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at $40^{o} C$ ? (Given $α_{s t e e l} = 11; = 17 \times 10^{- 6} p e r^{o} C$ )

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