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Physics · Heat Transfer

The thermal diffusivity (α) of a substance is:

Verified Solution4 OptionsUpdated: October 2026

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1Inversely proportional to the square of thermal conductivity
2Directly proportional to the square of thermal conductivity
3Directly proportional to thermal conductivity✓
4Inversely proportional to thermal conductivity

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Directly proportional to thermal conductivity

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The thermal diffusivity (α) of a substance is:

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