The $P-V$ diagram of a certain process (carnot cycle) is as shown. The process is also represent as

A thermodynamic system is taken from an original state $D$ to an intermediate state $E$ by the linear process shown in the figure. Its volume is then reduced to the original volume from $E$ to $F$ by an isobaric process. The total work done by the gas from $D$ to $E$ to $F$ will be $……J$

A $P-T$ graph is shown for a cyclic process. Select correct statement regarding this

A cyclic process $ABCA$ is shown in the $V-T $ diagram. Process on the $P-V$ diagram is

Three different processes that can occur in an ideal monoatomic gas are shown in the $P$ vs $V$ diagram. The paths are labelled as $A \rightarrow B, A \rightarrow C$ and $A \rightarrow D .$ The change in internal energies during these process are taken as $E _{ AB }, E _{ AC }$ and $E _{ AD }$ and the work done as $W _{ AB }$ $W _{ AC }$ and $W _{ AD }$

The correct relation between these parameters are