Assertion :The expansion produced in the matter due to absorption of heat energy is called Thermal Expansion Reason: The coefficient of linear expansion decreases with the increase of temperature.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Thermal expansion is the expansion produced in matter due to the absorption of heat energy. All states of matter show thermal expansion. Solids expand the least, liquids more and gases the most for the same rise in temperature.

Materials generally have a constant coefficient of thermal expansion is not changed considerably.

So Assertion is correct but Reason is incorrect.

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