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Wave Phenomena · Paper 2 — Free Physics SL Practice Questions

1FoundationSAQ-SReflection, refraction, diffraction, and interference5 marksPaper 2~8 min

Data

sin⁡θ1sin⁡θ2=v1v2\dfrac{\sin \theta_1}{\sin \theta_2} = \dfrac{v_1}{v_2}, v=fλ\quad v = f\lambda
A water wave passes from deep water into shallow water at an angle. The wave speed in deep water is 1.8 m s−11.8 \text{ m s}^{-1} and in shallow water is 1.2 m s−11.2 \text{ m s}^{-1}. The angle of incidence in deep water is 40°40°.
(a)
State what happens to the frequency of the wave as it enters shallow water. [1 mark]
(b)
Explain what happens to the wavelength of the wave as it enters shallow water. [2 marks]
(c)
Calculate the angle of refraction in the shallow water. [2 marks]
diagram

Solutions

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