Oxygen is times heavier than hydrogen

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

Oxygen is 1616 times heavier than hydrogen. At NTP, equal volumes of hydrogen and oxygen are mixed. The ratio of the speed of sound in the mixture to that in hydrogen is (1) 8\sqrt{8} (2) 18\sqrt{\frac{1}{8}} (3) 217\sqrt{\frac{2}{17}} (4) 3217\sqrt{\frac{32}{17}}

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