The increase in the length of an iron rod on heating is called

linear expansion

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superficial expansion

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cubical expansion

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material expansion

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Solution

The correct option is A linear expansion
Linear expansion is the process that results in an increase in only one of the dimensions of an object.

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The increase in the length of an iron rod on heating is called

The correct option is A linear expansionLinear expansion is the process that results in an increase in only one of the dimensions of an object.

The correct option is A linear expansion
Linear expansion is the process that results in an increase in only one of the dimensions of an object.