An ultrasound system uses a transducer to scan a patient's liver. The speed of the ultrasound wave in liver tissue is 1540 m/s.
The transducer operates at a frequency of 4.4 MHz (where 1 MHz=1,000,000 Hz1\text{ MHz} = 1,000,000\text{ Hz}1 MHz=1,000,000 Hz).
Calculate the wavelength of this ultrasound wave in metres.
Use the equation:
wave speed=frequency×wavelength \text{wave speed} = \text{frequency} \times \text{wavelength} wave speed=frequency×wavelength64 exam-style questions on Edexcel GCSE Physics 4.1 Wave properties, covering 4.1.1 Waves transfer energy and information, 4.1.2 Frequency, wavelength, amplitude, period and wavefronts, 4.1.3 Longitudinal and transverse waves, 4.1.4 The wave speed equations, 4.1.5 Measuring wave velocity, and 4.1.6 Calculating depth or distance from waves. Each one has a worked solution and a mark scheme showing where the marks go.