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

At 127^@C, for helium if time of flight is 0.1 nanosec, the mean free

1.	At 127^@C, for helium if time of flight is 0.1 nanosec, the mean free path of helium (in A) is
Answer» 15.8 158 1580 158000 SOLUTION :`lambda = C xx t = SQRT((3RT)/(M)) xx t = 1580 xx 10^(-10) m`.