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(C) According to the first law of thermodynamics,the change in internal energy $(\Delta U)$ is given by: $\Delta U = q + w$. Given that the internal e

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Adiabatic

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(C) According to the first law of thermodynamics,the change in internal energy $(\Delta U)$ is given by: $\Delta U = q + w$. Given that the internal energy decreases by the same amount as the work done by the system,we have $\Delta U = -w$. Substituting this into the first law equation: $-w = q + w$. This implies $q = 0$. $A$ process in which there is no exchange of heat $(q = 0)$ between the system and the surroundings is known as an adiabatic process.

If the internal energy of an ideal gas decreases by the same amount of the work done by the system,the process is

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