Question

If the coefficient of linear expansion of a solid is $0.00009$. Its coefficient of volume expansion is :

• A. 0.009
• B. 0.02
• C. 0.03
• D. 0.00027

Answer 1

Answer: (D)

Coefficient of Linear Expansion $(\alpha )=0.0009$
Relation between coefficient of linear expansion $(\alpha )$ and that of volume expansion $(r)$ is given by -
$r=3\alpha$
$\Rightarrow r=3\times 0.00009$
$\therefore r=0.00027$