Among the following cases, in which case mean free path increases

1.	Among the following cases, in which case mean free path increases
Answer» With INCREASING altitude with increasing TEMPERATURE When `O_2` is replaced by `CO_2` molecules When density of GAS increased Solution :`LAMBDA UARR` with `T and lambda ` with `P darr`. i.e. increased in altitude `lambda darr as sigma uarr.`

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