ISRO Mechanical & Aerospace 2008 - Question 57

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Topic: Heat Transfer

The variation of temperature inside a wall is shown by three different curves. In which case thermal conductivity least varies with temperature?

Figure for question 57, ISRO Mechanical & Aerospace 2008

  • A. A
  • B. B
  • C. C
  • D. Cannot be ascertained on the basis of information provided

Answer: B. B

Explanation: For curve B (which is a straight line), the thermal conductivity is constant and is not a function of temperature, meaning it varies the least.

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