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Unit - 5.3 Thermal Expansion And its Applications — PHYSICS STD 7 — Question

ICSE BoardEnglish MediumSTD 7PHYSICSUnit - 5.3 Thermal Expansion And its Applications2 Marks
Question
What do you mean by thermal expansion?
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Answer

Thermal expansion is the tendency of matter to change in shape, volume, and area in response to a change in temperature. Temperature is a monotonic function of the average molecular kinetic energy of a substance.

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