Q7 Diagnostic ultrasound

Group 2 questions

Diagnostic ultrasound of frequency 4.50 megahertz (4.5x10⁶Hz) is used to examine tumors in soft tissue.

QUESTION 7.1

What is the wavelength (in air) for this type of sound wave?

76m

4.5x10^-5m

3.9x10^-5m

7.62x10^-5m

QUESTION 7.2

If the speed of sound in soft tissue is 1500 meters per second, what is the wavelength of this sound wave?

C

3.33 x10^-4 m

8.55x10^-4 m

6.47x10^-4 m

330m