Question

explain the phenomenon of thermal expansion in solids​

Answer 1

Answer:

The expansion of material on heating us called thermal expansion.

It is of three types:

1. Linear Expansion

2. Volume Expansion

3. Superficial expansion

Answer 2

Answer:

a solid has a definite shape so when a solid is heated it expands in all directions hence the length area and volume all increase on heating a solid the increase in length of a solid is called linear expansion the increase in area is called superficial expansion and increase in volume is called cubical expansion.