Question

Coefficient linear expansion gives si unit define answer

Answer 1

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here is ur answer

Thermal expansion refers to a fractional change in size of a material in response to a change in temperature. For most materials, over small temperature ranges, these fractional changes… uses the SI unit inverse kelvin (K−1 or 1/K) or the equivalent acceptable non SI unit inverse degree Celsius (℃−1 or 1/℃).