Question

a laboratory use an ultrasonic scanner to trace tumor in tissue the operating frequency of scanner is 4.2×10^6 hertz calculate the wavelength of the sound in tissue if the sound is 1700m/s.

Answer 1

answer is 0.0004047619m.

Answer 2

Given that,

Frequency of scanner, $f=4.2\times 10^6\ Hz$

Speed of sound, v = 1700 m/s

To find,

The wavelength of the sound.

Solution,

The speed of sound n terms of wavelength and frequency is given by :

$v=f\lambda\\\\\lambda=\dfrac{v}{f}\\\\\lambda=\dfrac{1700\ m/s}{4.2\times 10^6}\\\\\lambda=4.04\times 10^{-4}\ m$

So, the wavelength of the sound is $4.04\times 10^{-4}\ m$.

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