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COMEDK2023PhysicsThermodynamics

If 150 ~J of heat is added to a system and the work done by the system is 110 ~J , then change in internal energy will be

Options

  1. A40 ~J
  2. B110 ~J
  3. C150 ~J
  4. D260 ~J

Correct answer

A. 40 ~J

Step-by-step solution

From the first law of thermodynamics, if an amount of heat Q is given to a system, a part of it is used in increasing the internal energy U of the system and the rest in doing work W by the system. array rlrl & Q & = U+W & & U & =Q-W U=150-110 & & =40 ~J array

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