A technician checks the ceramic lining of a furnace for hidden flaws. The probe she uses produces ultrasound of frequency 4.0 MHz. Ultrasound travels through the ceramic at 5600 m/s.
Calculate the wavelength of this ultrasound as it travels through the lining.
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.