Physics - Heat & Thermo Question with Solution | TestHub

One kilogram of a substance (initially solid at $0^{\circ }\mathrm{C}$) is supplied heat at a constant rate of $2kcal/min$. Its solid linear expansion coefficient is $\alpha =4\times 10^{-6}{}^{\circ }{\mathrm{C}}^{-1}$. Its temperature varies with time as shown.