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Question 18

From Physics HL Paper 1A (May 2025, TZ1)

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  1. A wave is travelling through a medium. The variation with time tt of the displacement dd of a particle in the medium is shown.
A sinusoidal wave graph showing displacement d in nanometers on the y-axis and time t in milliseconds on the x-axis. The wave oscillates between +5.0 and -5.0 on the y-axis. One full cycle of the wave completes at t = 4.0 ms.
A sinusoidal wave graph showing displacement d in nanometers on the y-axis and time t in milliseconds on the x-axis. The wave oscillates between +5.0 and -5.0 on the y-axis. One full cycle of the wave completes at t = 4.0 ms.

What is the frequency and the amplitude of the wave?

A table presenting four options (A, B, C, D) for frequency in Hz and amplitude in nm.
A table presenting four options (A, B, C, D) for frequency in Hz and amplitude in nm.

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