Question

Which one of the following statement is incorrect about ultrasound?
A) ‘Ultrasound’ literally means sound beyond the range of human being.
B) Piezo - electric effect produces ultrasound waves.
C) Like electromagnetic radiation, sound waves can pass through vacuum.
D) Through homogenous tissue when ultrasound waves are introduced, they pass unimpeded till they meet another tissue or organ.

Answer 1

in this option c is incorrect, because sound cannot be heard in vaccum condition as sound rays does not pass