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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A steel scale measures the length of a copper wire as 80.0 cm when both area at 20∘C (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40∘C? (Given α steel = 11×10^−6 per∘C and α copper= 17 × 10^−6 per∘C)

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

A solids floats submerged in a liquid. when the liquid is heated which of the following is most likely to happen?