Question

What happens to the size of an Object when it is heated ?​

Answer 1

Answer:

When an object is heated, it increases in size. The increase in size on heating, is called expansion. The decrease in size of an object on cooling, is called contraction. Expansion occurs on heating whereas contraction occurs on cooling

Explanation:

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Answer 2

Answer:

Thermal expansion is the change in size of an object as its temperature changes. ... Therefore, thermal expansion is the property of matter to increase in size on heating.