Plane water waves travel from a deep region of a ripple tank into a shallower region. In the deep water, the waves have a speed of 25 cm s-1 and a wavelength of 4.0 cm. The wave direction makes an angle of incidence of 40∘ 40^\circ\,40∘ with the normal to the boundary between the two regions. In the shallow water, the wave speed decreases to 15 cm s-1.
Calculate:
The wavelength of the waves in the shallow region.
The angle of refraction of the wave direction in the shallow region (measured relative to the normal).
237 exam-style questions on CIE IGCSE Physics General properties of waves, covering General properties of waves. Each one has a worked solution and a mark scheme showing where the marks go.