Question

What is linear expansion?

Options

• Increase in volume of a solid due to heating

• Increase in the length of a solid due to heating

• Decrease in the length of a solid due to cooling

• Increase in area of a solid due to heating

Answer 1

Increase in the length of a solid due to heating

Explanation:

Linear expansion specifically refers to the increase in length (one dimension) of a solid when its temperature rises.