A hospital uses ultrasonic scanner to locate tumors ina tissue. what is wavelength of sound in a tissue in which the speed of sound is 1.7 km/s. the operating frequency of the scanner is 4.2 MHZ.

Velocity = 1700 m/s

Frequecny = 4200000 Hz

Wavelength  =  V / F

                       = 1700 / 4200000   =   0.0004047619   metres

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