Answer: Quincke tube experiment.
- A Mainly closed pipes
- B Mainly open pipes
- C Quincke tube experiment
- D Mainly with tuning forks
Correct answer: C. Quincke tube experiment
Explanation: Quincke tube experiment demonstrates sound wave interference: sound splits into two paths of different lengths and recombines.
A standing wave forms from two identical waves travelling in opposite directions and interfering; nodes (always zero displacement) and antinodes (maximum displacement) stay fixed in place, unlike a travelling wave where the whole pattern moves.
Concept context
Wave types, superposition, standing waves, Doppler effect, and sound intensity.