In an adiabatic change, the pressure and temperature of a monoatomic gas are related as $P \propto T^C$, where $C$ equals
$\frac{2}{5}$
$\frac{5}{2}$
$\frac{3}{5}$
$\frac{5}{3}$
If $\Delta Q$ and $\Delta W$ represent the heat supplied to the system and the work done on the system respectively, then the first law of thermodynamics can be written as
where $\Delta U$ is the internal energy
A carnot engine having an efficiency of as heat engine, is used as a refrigerator. If the work done on the system is $10 \,J,$ the amount of energy absorbed from the reservoir at lower temperature is .......... $\mathrm{J}$
An ideal gas expands isothermally from a volume $V_1$ to $V_2$ and then compressed to original volume $V_1$ adiabatically. Initial pressure is $P_1$ and final pressure is $P_3$. The total work done is $W$. Then
Helium gas goes through a cycle $ABCDA$ (consisting of two isochoric and two isobaric lines) as shown in figure. Efficiency of this cycle is nearly ..... $\%$ (Assume the gas to be close to ideal gas)
An ideal gas expands in such a way that $PV^2 =$ constant throughout the process