Question

a hospital uses an ultrasonic scanner scanner to locate tumors in a tissue.What is the wavelength of sound in a tissue.if the speed of sound is 1.7km/h.the separating frequency of scanner is 4.2Mhz(1Mhz=10 ki power six)

Answer 1

Given V=1.7Km/hr       1.7*5/18   =.0.4722m/s
υ=4.2MHz
υ=4.2*10⁶Hz
V=υλ   or λ=v/υ
λ =0.4722/4.2 *10⁶Hz
λ=.1124*10^-6m