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Q.

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

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a

50°C

b

Less than 50°C but greater than 0°C  

c

0°C

d

More than 50°C

answer is B.

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Detailed Solution

Since, heat capacity of material increases with increase in temperature so, body at 100ºC has more heat capacity than body at 0ºC. Hence, final common temperature of the system will be closer to 100ºC  

TC>50ºC

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