A manufacturer sends ultrasound through a ceramic component and into a resin layer. The ultrasound approaches the boundary at an angle to the normal.
The source completes 1200 oscillations in 0.00050 s. The wavelength in the ceramic is 2.5 mm. The speed of ultrasound in the resin is 2400 m/s.
Calculate the speed of ultrasound in the ceramic and the percentage change in its wavelength when it enters the resin.
Explain how the direction of the ultrasound changes as it enters the resin.
112 exam-style questions on Edexcel GCSE Physics 4.3 Sound, ultrasound and infrasound, covering 4.3.1 Sound waves, vibrations and the human ear, 4.3.2 Ultrasound and infrasound, 4.3.3 Uses of ultrasound and infrasound, and 4.3.4 Sound waves passing between media. Each one has a worked solution and a mark scheme showing where the marks go.