Question

Which statement about the coefficient of thermal conductivity k is correct?

Options

• k depends on the length and area of the body

• k depends only on the nature of the material

• k depends on the temperature difference (T₁ − T₂)

• k depends on the time for which heat flows

Answer 1

k depends only on the nature of the material

Explanation:

The coefficient of thermal conductivity is a material property and does not depend on the size, shape, time, or applied temperature difference for a homogeneous material.