Multiple choice

Which of the following is not a use of ultrasound?

  1. Breaking small stones in kidneys

  2. Locating underwater objects

  3. Cleaning odd-shaped parts and electronic components

  4. Joining cracks and flaws in metal blocks

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ultrasound can detect cracks and flaws in metal blocks, but cannot join them.