Question

derive a relation between coefficients of linear expansion, superficial expansion and cubical expansion​

Answer 1

Explanation:

differences

LINEAR EXPANSION

When a solid in the form of a rod (or a wire) is heated, only the linear expansion (i.e., increase in length) is effective. The increase in length of a metal rod on heating depends

Cubical expansions of solids

When a solid is heated, it expands in all directions i.e., its length, breadth and thickness increase. Thus, the volume of the solid too increases.

Superficial expansion of solids

When a metal plate is heated, its length and breadth, both increase. This increases the area of the plate.