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The density of oxygen is 16 times the density of hydrogen. What is the ratio of speeds of sound in them?

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The density of oxygen is 16 times the density of hydrogen. What is the ratio of speeds of sound in them?
A. `1 : 4`
B. `4 : 1`
C. `2 : 1`
D. `1 : 16`
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Correct Answer - A
`v prop (1)/(sqrt(rho))`
`v_(O_(2))/(v_(H_(2))) = sqrt((rho_(H_(2)))/(rho_(O_(2)))) = sqrt((1)/(16)) = (1)/(4)`
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