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We consider a thermodynamic system. If D...

We consider a thermodynamic system. If `Delta U` respresents the increase in its internal energy and W the work done by the system, which of the following statements is true ?

A

`DeltaU = -W ` in an adiabatic process

B

`DeltaU = W` in an isothermal process

C

`DeltaU = -W` in an isothermal process

D

`DeltaU = W` in an adiabatic process

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