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.