The Graph Shows Temperature as a Function of Thickness in Three

question 38

Multiple Choice

The graph shows temperature as a function of thickness in three adjacent slabs of material of equal thickness. Assuming the heat transfer through the compound slabs is in a steady state, what can you say of these materials?

• A) material 1 is the best insulator
• B) material 2 is the best insulator
• C) material 3 is the best insulator
• D) all are equally good insulators
• E) It is impossible to determine which is the best insulator.

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