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NEET2026PhysicsChapterActual

A thermodynamic system undergoes a process in which its internal energy increases by 520 J. If the system performs 180 J of work on its surroundings during this process, what is the total heat absorbed by the system?

Options

  1. A340 J
  2. B700 J
  3. C520 J
  4. D180 J

Correct answer

B. 700 J

Step-by-step solution

According to the first law of thermodynamics: Q = U + W Given that the internal energy increases by 520 J, U = 520 J. The system performs 180 J of work on its surroundings, so W = 180 J. Substituting the values: Q = 520 + 180 = 700 J Answer: 700 J

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