Question

If a gas is compressed isothermally then the r.m.s. velocity of the molecules ______.

Options

• increases

• decreases

• first decreases and then increases

• remain the same

Answer 1

If a gas is compressed isothermally then the r.m.s. velocity of the molecules remain the same.

Explanation:

There is no change in internal energy in an isothermal process. As a result, the RMS velocity does not change.