If Q, E and W denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then

A sample of an ideal gas undergoes on isothermal expansion. If dQ, dU and dW represent the amount of heat supplied, the change in internal energy and the work done respectively,then

In an isothermal expansion change in internal energy and work done by the gas are respectively

If change in internal energy -80 J. The work done by system is +40 J. Calculate the heat change.

If change in internal energy -90 J. The work done by system is + 50 J. Calculate the heat change.

Let Q and W denote the amount of heat given to an ideal gas the work done by it in an adiabatic process.

Let Q and W denote the amount of heat given to an ideal gas the work done by it in an isothermal process.

In given figure, let DeltaU_(1) and DeltaU_(2) be change in internal energy in process ABC and CDA respectively. DeltaQ and W be the net heta given and net work done by the system in the process ABC +CDA , then

If DeltaU and Delta W represent the increase in internal energy and work done by the system resectively in a thermodynamical process, which of the following is true?

In an adiabatic expansion of 2 moles of a gas, the change in its internal energy was found to be –100J. The work done in this process is :