KTGMedium
Question
N(< 100) molecules of a gas have velocities 1, 2, 3........ N km/s respectively. Then
Options
A.rms speed and average speed of molecules is same.
B.ratio of rms speed to average speed is √(2N + 1)(N + 1)/6N
C.ratio of rms speed to average speed is √(2N + 1)(N + 1)/6
D.ratio of rms speed to average speed of molecules is 
Solution
vrms = 
⇒ vrms = 
vrms =
...........(i)
var =
var =
.........(ii)
Form (i) & (ii)
⇒ vrms = vrms =
...........(i) var =
var =
.........(ii)Form (i) & (ii)
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