What is coefficient of Areal expansion??
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Answer:
• The area thermal expansion coefficient relates the change in a material's area dimensions to a change in temperature. It is the fractional change in area per degree of temperature change
• Thermal expansion refers to a fractional change in size of a material in response to a change in temperature. This include changes in length compared to original length (∆ℓ/ℓ0) called linear expansion. changes in area compared to original area (∆A/A0) called areal expansion or superficial expansion.
• The absolute coefficient of expansion of liquid is defined as the actual increase in the volume of liquid (sum of the apparent increase in the volume of liquid in vessel and increase in the volume of the vessel) per unit original volume of liquid per unit rise in temperature
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