Section-D: Comprehension Type
Two vessels A and B are connected via a stopcock. The vessel a filed with a gas at a certain pressure and the vessel B is completely evacuated. The entire assembly is immersed in a large vat of water and is allowed to come to thermal equilibrium with the water. The stopcock is opened and the gas is allowed to expand till both the vessels are uniformly occupied. After sometime when the vessel has again come to thermal equilibrium, temperature of the water is recorded. The result shows that the temperature of water after the experiment is the same as that before.
For the expansion referred to above, which of the following is true?