All the following statements are true except?
*Ultrasound waves are sound waves,not electromagnetic waves. *Ultrasound waves travel with a velocity of 1540m/s in human tissues. *All Electromagnetic radiations like X rays,Gamma Rays,Infrared waves travel with the same velocity i.e. the velocity of speed of light 3 x108m/s. *Wavelength of Xrays is 0.1-100 Angstrom.
X-Rays are extranuclear in origin.
Gamma Rays are intranuclear in origin.
Ultrasound uses a type of Electromagnetic radiation.
Velocity of X-Rays is equal to the velocity of light.
Introduction to Radiology