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AGases, then solids, then liquids
BGases, then liquids, then solids
CLiquids, then solids, then gases
DSolids, then liquids, then gases
Answer & Solution
Correct answer: D. Solids, then liquids, then gases
1. Speed of sound depends on the medium's elasticity and density.
2. Solids are highly elastic, so sound moves fastest in them.
3. Liquids come next, gases slowest.
4. Hence solids > liquids > gases.
_Source: Selina Concise Physics Class 9, Ch 8 Sound (Mistral OCR'd PDF), section on speed in different media_
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