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 km s¯¹ ? The operating frequency of the scanner is 4.2 MHz.
Given: The speed of sound in a tissue is 1.7 km / s and the operating frequency of the scanner is 4.2 MHz .
The wavelength of sound is given as,
λ = v f
where, v is the speed of sound in a tissue and f is the operating frequency of the scanner.
By substituting the given values in the above equation, we get
λ = 1.7 × ( 10 3 m / s 1 km / s ) 4.2 × ( 10 6 Hz 1 MHz ) = 4.1 × 10 − 4 m
Thus, the wavelength of sound in the tissue is 4.1 × 10 − 4 m .
Given: The speed of sound in a tissue is
The wavelength of sound is given as,
where,
By substituting the given values in the above equation, we get
Thus, the wavelength of sound in the tissue is
