Question

A metal of length $L$ whose coefficient of linear expansion $\alpha ={10}^{-3}{/}^{\circ }C$ is heated such that it's temperature changes by $1000K$. Assuming its $\alpha$ is constant during the temperature change. [Take $e\approx 2.7$]

• A. Final length of the rod is greater than $2L$
• B. Final length of the rod is greater than $2.5L$
• C. Final length of the rod is greater than $L$
• D. Increase in the length due to heating $L$

Answer 1

Answer: (A), (B)

The correct options are
A Final length of the rod is greater than $2L$
B Final length of the rod is greater than $2.5L$