Question

Which of the following relationships is valid for the root mean square speed `(u_("rms"))` , average speed `(u_(av))`, and the most probable speed `(u_("mp"))`?
A. `u_(mp) gt u_(av) gt u_(rms)`
B. `u_(av) gt u_(mp) gt u_(rms)`
C. `u_(rms) gt u _(av) gt u _(mp)`
D. `u_(rms) gt u_(mp) gt u_(av)`

Answer 1

Correct Answer - C
`u_(rms) = sqrt((3 RT)/(M)), u_(mp) = sqrt((2 RT)/(M))` , and `u_(av) = sqrt((8 RT)/(pi M))`
`:. U_(rms) : u_(av) : u_(mp) = sqrt(3) : sqrt(2.5) : sqrt(2)`