When heat is provided to a solid, its temperature

When heat is supplied to a solid, it can be utilized in two ways.

If the solid is not at its melting point, the supplied heat increases the kinetic energy of its molecules, which results in an increase in its temperature.

If the solid is at its melting point, the supplied heat is used as latent heat to change its phase from solid to liquid. During this phase transition, the temperature of the solid remains constant.

Therefore, the temperature of the solid may increase or may remain constant.