A hospital uses an ultrasonic scanner to...

A hospital uses an ultrasonic scanner to locate tumours in a tissue.What is the wavelength of sound in the tissue in which the speed of sound is `1.7 kms^(-1)` ? The operating frequency of the scanner is 4.2 MHz.

`4.1 xx10^-4m`

`1.1 xx10^-4m`

`3.1 xx10^-4m`

`4.1 xx10^-3m`

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