Question

Two identical bodies are made of a material for which the heat capacity increase with temperature. One of these is at ${100}^{o}C$, while the other one is at $0^{o}C$. If the two bodies are brought into contact, then assuming no heat loss, the final common temperature is

• A. $0^{o}C$
• B. ${50}^{o}C$
• C. more than ${50}^{o}C$
• D. less than ${50}^{o}C$ but greater than $0^{o}C$

Answer 1

Answer: (C)

more than ${50}^{o}C$

Since the heat capacity increases with temperature, less temperature is dropped in higher temperature body when equal amount of heat is transferred from lower temperature body which rises more in temperature.

Hence the final temperature is more than ${50}^{\circ }$.