question_answer

      A solid is melted (above the melting point) and allowed to cool down at normal condition. Its variation of temperature as a function of times is as shown in the figure given below. What is the reason for the plateau (flat position) in the central region of the cooling curve as shown in the figure?                            [NDA]

A) Latent heat of fusion of the solid

B) Specific heat of the solid

C) Thermal conductivity of the solid

D) Thermal capacity of the solid.