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Compare work done in reversible and irreversible (single or multi-stage) isothermal processes

This type of question, asked 3 times: 2 Apr 2025, 21 Jan 2026 S1, 6 Apr 2026 S1. All 3 questions below, oldest first.

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  1. Question 1

    2 Apr 2025

    113
    Arrange the following in order of magnitude of work done by the system / on the system at constant temperature : (a) ∣wreversible ∣\left| w_{\text{reversible~}} \right| for expansion in infinite stage. (b) ∣wirreversible ∣\left| w_{\text{irreversible~}} \right| for expansion in single stage. (c) ∣wreversible ∣\left| w_{\text{reversible~}} \right| for compression in infinite stage. (d) ∣wirreversible ∣\left| w_{\text{irreversible~}} \right| for compression in single stage. Choose the correct answer from the options given below:

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  2. Question 2

    21 Jan 2026 S1

    43
    Which of the following graphs between pressure 'P' versus volume 'V' represent the maximum work done?

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  3. Question 3

    6 Apr 2026 S1

    30
    Arrange the following isothermal processes in order of the magnitude of the work ( p−Vp-V ) involved between states 1 and 2 . (A) Expansion in single stage wAw_{A} (B) Expansion in multi stages wBw_{B} (C) Compression in single stage wCw_{C} (D) Compression in multi stages wDw_{D}

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