$P-V$ diagram for two gases during adiabatic process are shown in the figure by curves $A$ and $B$ are for
$O_2\, and\, He$
$Ar\, and\, He$
$He\, and\, Ar$
$He\, and\, O_2$
The $P-V$ diagram of $2\,g$ of helium gas for a certain process $A\to B$ is shown in the figure. What is the heat given to the gas during the process $A \to B$?
In the following indicator diagram, the net amount of work done will be
A carnot engine having an efficiency of $\frac{1}{10}$ is being used as a refrigerator. If the work done on the refrigerator is $10 \;\mathrm{J},$ the amount of heat absorbed from the reservoir at lower temperature is .............. $\mathrm{J}$
$5.6\,liter$ of helium gas at $STP$ is adiabatically compressed to $0.7\,liter$ . Taking the initial temperature to be $T_1$ , the work done in the process is
A monoatomic gas is supplied heat $Q$ very slowly keeping the pressure constant. The work done by the gas will be