Question

The increase in area of a particular solid on heating is called

• A. linear expansion
• B. superficial expansion
• C. cubical expansion
• D. all of these.

Answer 1

The correct option is B

superficial expansion

When solid is heated it expands in all directions i.e. length, area and volume.The increase in area of a particular solid on heating is called superficial expansion.The increase in length of a particular solid on heating is called linear expansion and increase in volume of a particular solid on heating is called cubical expansion.