alleryStart learning →Ultrasonic waves are used in medicine for
ALighting up the operation theatre safely
BSterilising surgical instruments by heat
CCutting tissue during open-heart surgery
DImaging unborn babies in the womb
Answer & Solution
Correct answer: D. Imaging unborn babies in the womb
1. The chapter lists ultrasonic applications in medicine.
2. Ultrasonic imaging is used for prenatal scans.
3. It is safer than X-rays for the fetus.
4. So option A is correct.
_Source: Selina Concise Physics Class 9, Ch 8 Sound (Mistral OCR'd PDF), section on ultrasonic applications_
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