48. At a given temperature if
Vrms is the root mean square velocity of the molecules of a gas and the Vs velocity of sound in it, then these are related as [γ =( CP/Cv)]
(a) Vrms =Vs (b) Vrms = √(3/γ)Vs
(c) Vrms = √(γ/3)Vs (d) Vrms = (3/γ)Vs
Answer-b
(11)
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