If DeltaU and DeltaW represent the increase in internal energy and work done by the system respectively in a thermodynamical process which of the following is true?

If DeltaU and DeltaW represent the increase in internal energy and wor

1.	If DeltaU and DeltaW represent the increase in internal energy and work done by the system respectively in a thermodynamical process which of the following is true?
Answer» `DeltaU=-DeltaW` , in an adiabatic process `DeltaU=DeltaW`, in an ISOTHERMAL process `DeltaU=DeltaW` in an adiabatic process `DeltaU=-DeltaW` in an isothermal process SOLUTION :According to first LAW of thermodynamics , `DeltaQ=DeltaU+DeltaW` For an adiabatic process `DeltaQ=0` `THEREFORE DeltaU=-DeltaW` For an isothermal process, `DeltaU=0` `therefore DeltaQ=DeltaW`