Radiology All the following statements are true except? A X-Rays are extranuclear in origin. B Gamma Rays are intranuclear in origin. C Ultrasound uses a type of Electromagnetic radiation. D Velocity of X-Rays is equal to the velocity of light. 💡 Explanation All the following statements are true except? ✓ Correct Answer: C. Ultrasound uses a type of Electromagnetic radiation.