For which of the following processes is q = D | vedclass

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(D) According to the first law of thermodynamics,$\Delta U = q + w$.For a process to have $q = \Delta U$,the work done $(w)$ must be zero.Work done is

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$O 	o D$

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(D) According to the first law of thermodynamics,$\Delta U = q + w$.For a process to have $q = \Delta U$,the work done $(w)$ must be zero.Work done is given by $w = -P \cdot \Delta V$.For $w = 0$,the change in volume $(\Delta V)$ must be zero,which corresponds to an isochoric process.In the given $P-V$ graph,the process $O 	o D$ represents a vertical line where the volume $(V)$ remains constant.Therefore,for the process $O 	o D$,$\Delta V = 0$,which implies $w = 0$ and $q = \Delta U$.

For which of the following processes is $q = \Delta U$?

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