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Question 12

From Physics HL Paper 1 (May 2024, TZ2)

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  1. The equilibrium positions of six particles in a medium are separated by a distance of 2 cm as shown.
Two diagrams showing the equilibrium positions of six particles and their positions after a longitudinal wave is transmitted. The top diagram shows particles at 0, 2, 4, 6, 8, 10 cm. The bottom diagram shows particles at 0, 2, 4, 6, 8, 10 cm, but with some displacement.
Two diagrams showing the equilibrium positions of six particles and their positions after a longitudinal wave is transmitted. The top diagram shows particles at 0, 2, 4, 6, 8, 10 cm. The bottom diagram shows particles at 0, 2, 4, 6, 8, 10 cm, but with some displacement.

The positions of these particles, when a longitudinal wave is transmitted through the medium, are now shown.
What is the wavelength of the wave?

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