Question

A thermally insulated container is divided into two parts by a screen. In one part the pressure and temperature are $P$ and $T$ for an ideal gas filled. In the second part it is vacuum. If now a small hole is created in the screen, then the temperature of the gas will

• A. decrease
• B. increase
• C. remain same
• D. none of these

Answer 1

Answer: (C)

remain same

According to the ideal gas law, PV = nRT,

Since the will be a change in volume of gas occurs slowly i.e. process occurs isothermally.
(To compensate for the change in volume, there will be a corresponding change in the pressure of the gas, therefore the temperature will tend to remain constant.)