True or False: An X-ray tube houses a radioactive substance to release X-rays when you press the exposure button.

• A. True
• B. False
• C. Only in some models
• D. Only for medical purposes

Answer: (B)

The assertion that an X-ray tube houses a radioactive substance to release X-rays is false. Instead, X-ray tubes operate by utilizing high voltage to accelerate electrons towards a target material, typically made of tungsten. When these accelerated electrons collide with the target, their kinetic energy is converted into X-rays. This is fundamentally different from the process involving radioactive materials, which emit radiation without the need for external energy input like electron acceleration. Therefore, knowing that X-ray tubes generate X-rays through a mechanical and electrical process rather than a radioactive one clarifies why the answer to the statement is false. Understanding the mechanism of X-ray production is crucial for grasping concepts related to radiation safety and imaging technology in medical and industrial applications.