Question

Linear expansion of a substance depends upon its

• A. initial length
• B. Change in temperature
• C. nature of the material
• D. All the above

Answer 1

The correct option is D All the above

The linear expansions of a metal rod of initial length $I_0$ is $\Delta I=\alpha I_0\Delta t$
Linear expansion of a substance depends upon the original length, change in temperature and nature of the material.