Question

The increase in length of the solid on heating is called:

• A. Length expansion
• B. Linear expansion
• C. Superficial expansion
• D. Cubical expansion

Answer 1

The correct option is B

Linear expansion

The expansion in the matter is divided into three classes:

1. Linear expansion: The increase in length of a solid, when heated, is called linear expansion.
2. Superficial expansion: The increase in the area of solid, when heated, is called superficial expansion.
3. Cubical expansion: The increase in the volume of a substance(solid, liquid, or gas) when heated, is called cubical expansion.

Hence, the correct answer is option B: Linear expansion.