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KVPY2010PhysicsThermodynamics

A piece of hot copper at 100^ C is plunged into a pond at 30^ C . The copper cools down to 30^ C , while the pond, being huge, stays at its initial temperature. Then-

Options

  1. Acopper loses some entropy, the pond stays at the same entropy
  2. Bcopper loses some entropy, and the pond gains exactly the same amount of entropy
  3. Ccopper loses entropy, and the pond gains more than this amount of entropy
  4. Dboth copper and the pond gain in entropy

Correct answer

C. copper loses entropy, and the pond gains more than this amount of entropy

Step-by-step solution

Using theory of entropy it is evident that wer is (C).

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