Which of these is constant in the adiabatic process?
Correct answer: D. Both a and c
- A. Total heat
- B. Work done
- C. Entropy
- D. Both a and c
Explanation
In an adiabatic process, the quantity that remains constant is the entropy and total heat.The term "adiabatic" refers to a process in which there is no heat transfer between the system and its surroundings. In such a scenario, the system is thermally isolated, meaning there is no exchange of heat energy.While several properties can change during an adiabatic process, such as pressure, temperature, volume, and internal energy, the entropy of the system remains constant. The entropy is a measure of the system's disorder or randomness.In an adiabatic process, the absence of heat transfer implies that the system's entropy remains constant because entropy change is associated with heat exchange. Therefore, the entropy is a conserved quantity in an adiabatic process.
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About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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