List of practice Questions

The volume $(V)$ of a monatomic gas varies with its temperature $(T)$, as shown in the graph. The ratio of work done by the gas, to the heat absorbed by it, when it undergoes a change from state $A$ to state $B$, is

The coefficient of performance of a refrigerator is $5$. If the temperature inside freezer is $-20^{\circ }C, $ the temperature of the surroundings to which it rejects heat is

The work done during the expansion of a gas from a volume of $4\, dm^3$ to $6 \,dm^3$ against a constant external pressure of $3$ atm is :-