A vertical cylinder with heat- conducting walls is closed at the bottom and is fitted with a smooth light piston. It contains one mole of an ideal gas. The temperature of the gas is always equal to the surrounding 's temperature, T_0 The piston is moved up slowly to increase the volume of the gas to eta times. Which of the following is incorrect?

A vertical cylinder with heat- conducting walls is closed at the botto

1.	A vertical cylinder with heat- conducting walls is closed at the bottom and is fitted with a smooth light piston. It contains one mole of an ideal gas. The temperature of the gas is always equal to the surrounding 's temperature, T_0 The piston is moved up slowly to increase the volume of the gas to eta times. Which of the following is incorrect?
Answer» Work done by the gas is `RT_(0)` In `eta`. Work done against the atmosphere is `RT_(0(eta-1))`. There is no change in the internal energy of the gas. The FINAL pressure of the gas is `(1)/(eta-1)` TIMES its INITIAL pressure. Solution :isothermal process