ln which of the processes, does the internal energy of the system remain constant?

Adiabatic

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Isochoric

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Isobaric

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Isothermal

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Solution

The correct option is D Isothermal
The change in internal energy of a system is given by $Δ U = C_{V} Δ T$
Thus, if the temperature of the system changes, then the internal energy changes.
Hence, internal energy remains constant for an "Isothermal" process as temperature remains constant in isothermal process.

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