JEE Advanced 2012 Paper 1 Physics Q8

Physics · Kinetic Theory of Gases

Problem

A mixture of 2 moles of helium gas (atomic mass =4 amu=4\,\mathrm{amu}) and 1 mole of argon gas (atomic mass =40 amu=40\,\mathrm{amu}) is kept at 300 K300\,\mathrm K in a container. The ratio of the rms speeds (vrms(helium)vrms(argon))\left(\frac{v_{\mathrm{rms}}(\text{helium})}{v_{\mathrm{rms}}(\text{argon})}\right) is

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