Question

Q.Give few examples how expansion on heating is useful.

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Answer 1

Answer:

ice solids like iron ball and ring are example

Answer 2

Explanation:

How can heat expansion be useful?

Substances expand (increase in size) when they get warmer, and they contract (decrease in size) when they get cooler. This property can be useful. For example: Thermometers work because the liquid inside them expands and rises up the tube when it gets hotter.