Question: Which of the following statements is true regarding thermal conductivity? (2023)

Options:

1. It is higher in gases than in solids
2. It is a measure of a material\'s ability to conduct heat
3. It increases with temperature
4. It is independent of material properties

Correct Answer: It is a measure of a material\'s ability to conduct heat

Exam Year: 2023

Solution:

Thermal conductivity is a measure of a material\'s ability to conduct heat; it varies with material and temperature.