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Physics · PYQ NEET UG 2016(2)

हिन्दी

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

  1. \( 0^\circ\text{C} \)
  2. \( 50^\circ\text{C} \)
  3. more than \( 50^\circ\text{C} \)
  4. less than \( 50^\circ\text{C} \) but greater than \( 0^\circ\text{C} \)

Correct answer · Option 3

more than \( 50^\circ\text{C} \)

Explanation

Since heat capacity increases with temperature, the body at higher temperature will give up more heat per degree fall than the heat absorbed per degree rise by the colder body. Thus, equilibrium temperature is greater than \( 50^\circ\text{C} \).
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