Same chapter3 marksDifficulty: Medium
Why is the ceiling of a large concert hall often made curved?
Sound
1 markDifficulty: Medium
Sound cannot travel through:
- aa solid
- ba liquid
- ca gas
- da vacuum
Original Khojo Papers practice question — not from a past board paper.
Answer
a vacuum
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Sound is a mechanical wave and needs particles of a medium to pass the vibration on.
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Same chapter3 marksDifficulty: Medium
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