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  4. If the pressure in a closed vessel is reduced by drawing out some gas. the mean-free path of the molecules

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Q. If the pressure in a closed vessel is reduced by drawing out some gas. the mean-free path of the molecules

Kinetic Theory

Solution:

The mean-free path of molecule is the distance traveled by a molecule in two consecutive collision. If pressure is reduced and there are less particle then a molecule will travel longer distance before collision, so mean free path is increased.