Question

The volume of a block of metal at \(30^\circ\text{C}\) changes by \(0.12\%\) when its temperature is increased to \(70^\circ\text{C}\). The coefficient of linear expansion of the metal is

• A. \(2 \times 10^{-5} /^\circ\text{C}\)
• B. \(3 \times 10^{-5} /^\circ\text{C}\)
• C. \(4 \times 10^{-5} /^\circ\text{C}\)
• D. \(1 \times 10^{-5} /^\circ\text{C}\)

Hint:

Relation: $\beta = 3\alpha$

Answer 1

The Correct Option is D