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NEET2009PhysicsThermodynamicsActual

The internal energy change in a system that has absorbed 2 k cal of heat and done 500 ~J of work is :

Options

  1. A7900 ~J
  2. B8900 ~J
  3. C6400 ~J
  4. D5400 ~J

Correct answer

A. 7900 ~J

Step-by-step solution

dU = Q - W =8400-500=7900 ~J

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