Thermal conductivity of a conducting solid material depends upon its_______________?
Correct answer: C. Both A. & B.
- A. Temperature
- B. Porosity
- C. Both A. & B.
- D. Neither A. nor B.
Explanation
Thermal conductivity varies with temperature and is strongly affected by porosity because pores usually contain poorly conducting gas. Consequently, both temperature and porosity influence the conductivity of a solid.
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