Physics for IGCSE & O level - Waves And Sounds (Section 3 - No. 1)

Why can X-rays not be used for the ultrasound test?

Because it can cause cell damage to the fetus

Because it has a higher frequency.

Because it is an infrared wave.

X-rays cannot be directed at a fetus.

X-rays cannot be used because it can cause cell damage inside a growing baby.