Physics · Oct / Nov 2025 · Paper 11 · Question 18
5054Sound
The sentences describe sound waves. Three words have been omitted. Sound waves are longitudinal waves that consist of regions of higher pressure called ......1...... and regions of lower pressure called ......2...... . An echo occurs when a sound wave is ......3...... . Which words complete gaps 1, 2 and 3?
- Acompressions, rarefactions, reflected
- Bcompressions, rarefactions, refracted
- Crarefactions, compressions, refracted
- Drarefactions, compressions, reflected
As printed in the paper
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Correct answer: A. compressions, rarefactions, reflected
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