Question

What do you mean by free path of gas molecules?

Answer 1

Answer:

Between every two consecutive collisions, a gas molecule travels a straight path. The average distance of all the paths of a molecule is the mean free path.

Answer 2

Answer:

The mean free path, in physics, refers to the average distance travelled by a moving particle like an atom, a molecule or a photon between successive collisions that modify its direction or energy or other particle properties.