A metal sphere of mass,

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A metal sphere of mass, mm, at a temperature of 80 ∘C80\text{ }^{\circ}\text{C} is placed into an equal mass of water at 20 ∘C20\text{ }^{\circ}\text{C} in an insulated container. The specific heat capacity of water is twice that of the metal. After a short time, the metal and the water are at the same temperature. This new temperature is (1) 60 ∘C60\text{ }^{\circ}\text{C} . (2) 50 ∘C50\text{ }^{\circ}\text{C} . (3) 40 ∘C40\text{ }^{\circ}\text{C} . (4) 30 ∘C30\text{ }^{\circ}\text{C} .

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