Sound
16 CDS Physics past-year questions from 12 papers, 2016 to 2025, with answers and worked solutions.
About this chapter
- Difficulty: 7 easy · 9 moderate.
- Most-asked subtopics: Wave Equation, Speed, and Frequency Bands (8), Foundations — Sound, Perception, and the Ear (4), Sound Behaviours — Reflection, Echo, Reverberation, Beats (2).
- Updated 28 August 2026.
#1Applications — SONAR, Transducers, Instruments
#2Foundations — Sound, Perception, and the Ear
#3Sound Behaviours — Reflection, Echo, Reverberation, Beats
#4Wave Equation, Speed, and Frequency Bands
#5Wave Equation, Speed, and Frequency Bands
Done a few? Here’s your next move
#6Foundations — Sound, Perception, and the Ear
#7Wave Equation, Speed, and Frequency Bands
#8Foundations — Sound, Perception, and the Ear
#9Wave Equation, Speed, and Frequency Bands
#10Wave Equation, Speed, and Frequency Bands
#11Sound Behaviours — Reflection, Echo, Reverberation, Beats
#12Applications — SONAR, Transducers, Instruments
#13Wave Equation, Speed, and Frequency Bands
#14Wave Equation, Speed, and Frequency Bands
#15Wave Equation, Speed, and Frequency Bands
#16Foundations — Sound, Perception, and the Ear