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प्रश्न
The velocities of sound waves in four media P, Q, R and S are 18,000 km/h, 900 km/h, 0 km/h and 1200 km/h respectively. Which medium could be a liquid substance?
विकल्प
P
Q
R
S
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उत्तर
Velocity of sound in liquid medium is intermediate to the velocities in solid and gas medium.
(d) S.
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