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At 127^@C, for helium if time of flight ...

At `127^@C`, for helium if time of flight is 0.1 nanosec, the mean free path of helium (in A) is 

A

15.8

B

158

C

1580

D

158000

Text Solution

Verified by Experts

The correct Answer is:
C
`lambda = C xx t = sqrt((3RT)/(M)) xx t = 1580 xx 10^(-10) m`.
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