The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible _____________ process?
Correct answer: B. Isothermal
- A. Isobaric
- B. Isothermal
- C. Adiabatic
- D. None of these
Explanation
The polytropic work expression contains the factor 1 − n and becomes indeterminate when n = 1, the isothermal case; its work must be obtained separately as W = nRT ln(V₂/V₁). Isobaric and reversible adiabatic processes correspond to n = 0 and n = γ, respectively.
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