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CAIE A-Level Physics AS 8.1.4 Wavelength May Be Determined From the Positions of Nodes or Antinodes of a Questions

Apply the principle of superposition to explain interference patterns produced by coherent waves.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Apply the principle of superposition to explain interference patterns produced by coherent waves.

CAIE A-Level Physics AS 8.1.4 Wavelength May Be Determined From the Positions of Nodes or Antinodes of a Questions question 1

[Maximum number: 4]

Question (a)

(a)

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.

[ 4 ]

Question (i)

(i)

State the distance between a node and an adjacent antinode.

distance =m [1]
[ 1 ]

Question (ii)

(ii)

Determine, for the sound in the tube,
1. the wavelength,
wavelength = m
2. the frequency.
frequency = Hz

[ 3 ]
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