Question

In Physics ,WHY IS The expansion of AREA of solids is called superficial expansion ？​

Answer 1

Superficial Expansion of Solids: Expansion in area of a Laminar surface due to heating is known as superficial expansion. The coefficient of superficial expansion is defined as the ratio of increase in area to its original area for every degree increase in temperature. Coefficient of superficial expansion.

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Answer 2

The Expansion Of the Solid area is known as Superficial Expansion because due to the rise in temperature or u can say because they heat up ......

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