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The ratio of velocity of sound in hydrogen and oxygen at STP is __________

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The ratio of velocity of sound in hydrogen and oxygen at STP is __________

(a) 16:1

(b) 8:1

(c) 4:1

(d) 2:1

This question was addressed to me in exam.

This intriguing question originated from Longitudinal Waves topic in division Waves of Engineering Physics I

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Correct choice is (c) 4:1

The explanation: vH/vO = √(MO/MH)=√(32/2)=4:1.

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