Question

Which of the following statements regarding the first law of thermodynamics is correct?

• A. The energy of the isolated system plus the energy The energy of the isolated system plus the energy of the surrounding is constant
• B. The energy of the isolated system minus the energy of the surrounding is constant
• C. The energy of an isolated system is constant
• D. The energy of an isolated system varies

Answer 1

Answer: (C)

$\because$ According to first law of thermodynamics, the total energy of an isolated system remains constant, through it may change from one form to another.