1.

Calculate the RMS velocity of molecules of a gas of which the ratio of two specific heats is 1.42 and velocity of sound in the gas is 500 m/s.

Answer»

727 m/s
527 m/s
927 m/s
750 m/s

Solution :`V_(S)=sqrt((gamma)/(3))C_(rms)`
`=sqrt((1.42)/(3))xxC_(rms)`
`500=sqrt(0.47)C_(rms)`
`C_(rms)=(500)/(sqrt(0.47))=727m//s`.


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