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| स्तंभ-$I$ | स्तंभ-$II$ |
|---|---|
| $(a)$ हीट इंजन | $(i)$ $\text{COP} = \frac{Q_2}{Q_1 - Q_2}$ |
| $(b)$ हीट पंप | $(ii)$ $\eta = \frac{Q_1 - Q_2}{Q_1}$ |
| $(iii)$ $\eta = \frac{T_1 - T_2}{T_1}$ |
| स्तंभ-$I$ | स्तंभ-$II$ |
|---|---|
| $(a)$ रुद्धोष्म (Adiabatic) | $(i)$ $\Delta Q = \Delta U$ |
| $(b)$ समतापी (Isothermal) | $(ii)$ $\Delta Q = \Delta W$ |
| $(iii)$ $\Delta U = -\Delta W$ |
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