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The average speed of air molecules is 48...

The average speed of air molecules is `485 "ms"^(-1)` . At STP the number density is `2.7xx10^(25)m^(-3)` and diameter of the air molecule is `2xx10^(-10)` m . The value of mean free path for the air molecule is

A

`61xx10^10s`

B

`61xx10^-10s`

C

`61xx10^9s`

D

`61xx10^-9s`

Text Solution

Verified by Experts

The correct Answer is:
B
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