The Total solution for NCERT class 6-12
A hospital uses an ultrasonic scanner tolocate tumours in a tissue. What is the wavelength of sound in the tissue inwhich the speed of sound is 1.7 km s–1? The operatingfrequency of the scanner is 4.2 MHz.
Speed of sound in the tissue, v =1.7 km/s = 1.7 × 103 m/s
Operating frequency of the scanner, ν = 4.2MHz = 4.2 × 106 Hz
The wavelength of sound in the tissue is given as: