If the pressure in a closed vessel is reduced by drawing out some gas, the mean free path of the molecules
A
Is decreased
B
Is increased
C
Remains unchanged
D
Increases or decreases according to the nature of the gas
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B
Is increased
b 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 pathis increased.
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