Question

The frequency of the waves used in ultrasonography is:
(A) 20 Hz
(B) Below 20 Hz
(C) 20 Hz to 20000 Hz
(D) Above 20000 Hz

Answer 1

Answer below 20Hz

Explanation:

Hope it helps you out........

Answer 2

Dear Student,

◆ Answer -

(D) Above 20000 Hz

● Explanation -

• Ultrasonic waves that have frequencies more than human hearing limit. i.e. more than 20000 Hz.
• Diagnostic imaging technique using ultrasonic waves in called ultrasonography.
• Actually, frequency of waves used in medical ultrasonography is between 3 MHz to 10 MHz.
• Most common use of ultrasonography is for detecting pregnancy by transvaginal sonography.

Thanks dear. Hope this helps you...