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स्थिर दाब पर, एक आदर्श गैस का वर्ग-माध्य मूल वेग घनत्व (d) के साथ विचलन (varies) करता है :
A. `d^(2)`
B. d
C. `sqrt(d)`
D. `(1)/(sqrt(d))`

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Correct Answer - D
`because u_(rms) = sqrt((3RT)/(M))`
आदर्श गैस के लिये, `PV = nRT` या `(PV)/(n) = RT`
`because u_(rms) = sqrt((3PV)/(nM)) sqrt((3P)/(n)xx(1)/(d))" "(because d = (M)/(V))`
`therefore` स्थिर दाब पर, `u_(rms) prop sqrt((1)/(d))`

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