A medical ultrasound transducer emits a sound wave of frequency 2.5 MHz. This wave travels from the coupling gel (where the speed of sound is 1500 m s-1) into a layer of cortical bone (where the speed of sound is 4080 m s-1).
What are the frequency and wavelength of this ultrasound wave as it propagates through the cortical bone?
Frequency =2.5 MHz= 2.5\text{ MHz}=2.5 MHz, Wavelength =1.63 mm= 1.63\text{ mm}=1.63 mm
Frequency =2.5 MHz= 2.5\text{ MHz}=2.5 MHz, Wavelength =0.60 mm= 0.60\text{ mm}=0.60 mm
Frequency =6.8 MHz= 6.8\text{ MHz}=6.8 MHz, Wavelength =0.60 mm= 0.60\text{ mm}=0.60 mm
Frequency =6.8 MHz= 6.8\text{ MHz}=6.8 MHz, Wavelength =1.63 mm= 1.63\text{ mm}=1.63 mm