If the velocity of sound in helium at room \( \mathrm{P} \) tempera...

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If the velocity of sound in helium at room
\( \mathrm{P} \) temperature is \( 330 \mathrm{~m} / \mathrm{s} \), then the velocity of sound

W in hydrogen is
(1) \( 330 \mathrm{~m} / \mathrm{s} \)
(2) \( 427.7 \mathrm{~m} / \mathrm{s} \)
(3) \( 1500 \mathrm{~m} / \mathrm{s} \)
(4) \( 5900 \mathrm{~m} / \mathrm{s} \)
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