1.

A steel scale measures the length of a copper wire as 80.0 cm, when both are at 20∘C (the calibration temperature for scale). What would be the scale reading for the length of wire, when both are at 40∘C?(Given αsteel=11×10−6 per ∘C and αcopper=17×10−6 per ∘C)

Answer»

A steel scale measures the length of a copper wire as 80.0 cm, when both are at 20C (the calibration temperature for scale). What would be the scale reading for the length of wire, when both are at 40C?

(Given αsteel=11×106 per C and αcopper=17×106 per C)



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