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CAIE A-Level Physics AS 8.1.2 Experiments That Demonstrate Stationary Waves Using Microwaves Stretched Questions

Explain stationary waves as the result of superposition of two waves travelling in opposite directions.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Explain stationary waves as the result of superposition of two waves travelling in opposite directions.

CAIE A-Level Physics AS 8.1.2 Experiments That Demonstrate Stationary Waves Using Microwaves Stretched Questions question 1

[Maximum number: 2]

A tube is open at both ends. A loudspeaker, emitting sound of a single frequency, is placed near one end of the tube, as shown in Fig. 3.1.

Fig. 3.1

Fig. 3.1

The speed of the sound in the tube is 340 ms−1340 \mathrm{~ms}^{-1}. The length of the tube is 0.60 m .
A stationary wave is formed with an antinode A at each end of the tube and two antinodes inside the tube.

Determine the minimum frequency of the sound from the loudspeaker that produces a stationary wave in the tube.
minimum frequency = Hz

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