A gas is taken through the cycle
A $$ \to $$ B $$ \to $$ C $$ \to $$ A, as shown. what is the net work done by the gas?

In the given (V $$-$$ T) diagram, what is the relation between pressure P₁ and P₂?

The amount of heat energy required to raise the temperature of 1 g of Helium at NTP, from T₁K to T₂K is

An ideal gas goes from state A to state B via three different processes as indicated in the P-V diagram.



If Q₁, Q₂, Q₃ indicate the heat absorbed by the gas along the three processes and $$\Delta $$U₁, $$\Delta $$U₂, $$\Delta $$U₃ indicate the change in internal energy along the three processes respectively, then