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JEE Main 2022 Physics question

PhysicsKinetic Theory of GasesJEE Main 2022

Sound travels in a mixture of two moles of helium and n moles of hydrogen. If rms speed of gas molecules in the mixture is times the speed of sound, then the value of n will be

Answer: (2)

Solution

The molar mass of the mixture is 2)/(2 + n). The ratio of specific heats is Double subscripts: use braces to clarify\gamma = (n_{1}C_{P}_{1} + n_{2}C_{P}_{2})/(n_{1}C_{V}_{1} + n_{2}C_{V}_{2}) = using = 5R/2 and = 3R/2 for helium and = 7R/2 and = 5R/2 for

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Question ID VK-024667