The ratio of speed of sound in hydrogen gas to the speed of sound in oxygen gas at the same temperature is:
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The ratio of speed of sound in hydrogen gas to the speed of sound in oxygen gas at the same temperature is:

G1 Physics · Accepted Answer

Use PV=nRT, U=(f/2)nRT, γ=1+2/f and vᵣₘₛ=√(3RT/M). At the same temperature, average translational kinetic energy depends only on T. Evaluating the given data/statements gives A: 4 : 1. Therefore the correct answer is A.