Q. Ultrasound of how much frequency is beamed into human body for sonography?
A) 15 - 30 MHz
B) 1 - 15 MHz
C) 45 - 70 MHz
D) 30 - 45 MHz
Explanation
[Solution from source] Diagnostic ultrasound uses roughly 1-15 MHz: lower frequencies penetrate deep organs and higher ones give finer detail near the surface. Much higher frequencies would be absorbed too quickly to image internal organs. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.