1. Ultrasounds are _______ in nature
(A) Invasive
(B) Non-invasive
(C) Crystal
(D) None of these
2. Diagnostic _______ is used for obtaining images of almost all range of internal organs
(A) X-ray machine
(B) Ultrasound machine
(C) Lithotriptor
(D) Defibrillator
3. Ultrasonic waves are _______ above the audible range
(A) Acoustic waves
(B) Short waves
(C) Sound waves
(D) Shock waves
4. For medical ultrasonic diagnostic applications, the ______ mode of wave propagation is normally used
(A) Transverse
(B) None of these
(C) Linear
(D) Longitudinal
5. Ultrasound waves cannot pass through _______
(A) Medium
(B) Water
(C) Air
(D) Vacuum