Multiple choice

The thermal conductivity of a rod depends on its

  1. length

  2. mass

  3. cross-section area

  4. material

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Thermal conductivity (k) is an intrinsic physical property of a substance that depends solely on the nature of the material and its temperature. It does not depend on the dimensions (length, area) or the mass of the object.