Adiabatic Process Statements – Rankers Physics

Thermodynamics: Practice Problem & Solution

Statement I: Internal energy of an ideal gas remains constant in an adiabatic process. Statement II: In an adiabatic process, change in internal energy of a gas is equal to work done on or by the gas in the process.
Statement I is correct and statement II is incorrect
Statement I is incorrect and statement II is correct
Both statements are correct
Both statements are incorrect

Solution Explained:

To solve this problem, we apply the core principles of Thermodynamics. Understanding the underlying formula is key to arriving at the correct answer below:

In an adiabatic process, \(Q = 0\), so \(\Delta U = -W\), which means internal energy changes, so Statement I is incorrect. Statement II is correct since change in internal energy corresponds directly to the work done on or by the gas.

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