If a bimetallic strip is heated, it will

The heat energy absorbed by a system in going through a cyclic process shown in figure is

Figure below shows two paths that may be taken by a gas to go from a state $A$ to a state $C$. In process $AB$, $400\, J$ of heat is added to the system and in process $BC$, $100\, J$ of heat is added to the system. The heat absorbed by the system in the process $AC$ will be ............. $\mathrm{J}$

A perfect gas is found to obey the relation $PV^{3/2} =$ constant, during an adiabatic process. If such a gas, initially at a temperature $T$, is compressed adiabatically to half its initial volume, then its final temperature will be

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 $A \to B$

A Carnot engine has an efficiency of $1/6$. When the temperature of the sink is reduced by $62\,^oC$, its efficiency is doubled. The temperatures of the source and the sink are, respectively