1.

If tempetature changes form 27^(@)C to 127^(@)C, the relative percentage change in rms velocity is

Answer»

1.56
2.56
15.6
82.4

Solution :`c=sqrt((3RT)/(M))`
At `27^(@)C, ""c=sqrt((3Rxx300)/(M))=sqrt(300)X`
`=17.3x"" (x=sqrt((3R)/(M)))`
At `127^(@)C`
`c=sqrt((3Rxx400)/(M))=sqrt(400)x=20x`
`:.` Increase`=20x-17.3x=2.7x`
% increase`=(2.7x)/(17.3x)xx100=15.6`


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