KCET 2024 Physics Solved Paper

A solid cube of mass at a temperature θ0 is heated at a constant rate. It becomes liquid at temperature θ1 and vapour at temperature θ2. Let s1 and s2 be specific heats in its solid and liquid states respectively. If Lf and Lv are latent heats of fusion and vaporization respectively, then the minimum heat energy supplied to the cube until it vaporizes is