For some time, a solid object is kept in water inside an adiabatic container. The temperature of the water decreases during this period, and there is no appreciable change in the shape of the object. The temperature of the solid object

Step-by-step solution

Since the container is adiabatic, no heat is exchanged with the surroundings. The decrease in the temperature of the water indicates that the water loses heat. This heat must be absorbed by the solid object. The absorbed heat can either increase the temperature of the solid object or be utilized in a phase change. If the heat increases the thermal energy of the solid, its temperature will increase. If the solid is at its melting point, it will absorb heat to undergo a phase change, during which its temperature rema