InterviewSolution
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InterviewSolution
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According to kinetic theory of gases, for a datomic molecule.A. The pressure exerted by the gas is proportional to mean velocity of the moleculeB. The pressure exerted by the gas is proportional to the root mean velocity of the moleculeC. The root mean square velocity of the molecule is inversely proportional to the temperatureD. The mean translational kinetic energy of the molecule is proportioanl to the absolute temperature |
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Answer» Correct Answer - D Pressure exerted by the gas, `P = (1)/(3) (mn u^(2))/(V)`.....(1) Here, `u=` root mean squarevelocity `m=` mass of a molecule , `n=` No. of molecules of the gas Hence (a) and (b) are clearly wrong. Again `u^(2)=(3RT)/(M)` [explained from (1) ] Here, `M=` Molecular wt. of the gas , Hence `(c )` is wrong Further Average `K.E. =(3)/(2) KT,` Hence, (d) is true. |
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