engineering physics MCQ #2748

A gas expands isothermally from volume V1 to V2. The work done by the gas is given by

engineering physics MCQ #2748

  1. Question 1

    Q1. A gas expands isothermally from volume V1 to V2. The work done by the gas is given by

    • A) nRT ln(V2/V1)
    • B) nRT ln(V1/V2)
    • C) nRT(V2 - V1)
    • D) P(V2 - V1)

    Answer: nRT ln(V2/V1)

    Explanation: For an isothermal expansion, W = nRT ln(V2/V1), derived from the ideal gas law and the definition of work.