Thermodynamic Functions and Processes – Rankers Physics
Topic: Thermal Physics
Subtopic: Kinetic Theory of Gases

Thermodynamic Functions and Processes

Consider the following statements:
A. Work and heat are path functions in thermodynamics.
B. The internal energy of a gaseous system is state function.
C. For gaseous system, \(C_P\) is greater than \(C_V\).
D. Work done by gas at constant volume is zero.
Based on above information pick the correct option.
Only statement (A) is correct
Only statements (A), (B) and (C) are correct
Only statements (B), (C) and (A) are correct
All statements (A), (B), (C) and (D) are correct

Solution:

Work and heat depend on the path, whereas internal energy depends only on the initial and final states. For any gas, \(C_P > C_V\) due to expansion work. Since volume is constant, \(dV = 0\), so work done \(W = 0\). Hence, all statements are correct.

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