At what temperature rms speed of air molecules is doubled of that at NTP ?
At what temperature rms speed of air molecules is doubled of that at NTP ?
A. `819^(@)C`
B. `719^(@)C`
C. `909^(@)C`
D. None of these
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Correct Answer - A
we have `v"rms"propsqrtT`
`rArr" " (v_(1)^(2))/(v_(2)^(2))=(T_(1))/(T_(2))rArr(v^(2))/(4v^(2))=(273)/(T_(2))`
`rArr"Temperature "T_(2)=1092K=819^(@)C`
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