DANB Radiation Health and Safety (RHS) Practice Exam

Which of the following is true about Xrays?

1. They travel in waves

2. They are invisible

3. They have no mass

4. All of the above

The correct answer is: All of the above

X-rays are a form of electromagnetic radiation, which means they possess characteristics inherent to this type of energy. They travel in waves, which is a fundamental property of electromagnetic radiation. This wave behavior allows X-rays to penetrate various materials, depending on their energy levels. X-rays are also invisible to the human eye, making them particularly unique among different types of radiation. This invisibility is crucial in medical imaging, as it allows for the visualization of internal structures without being seen directly. Additionally, X-rays have no mass, which aligns with the characteristics of electromagnetic radiation. They do not exhibit weight or occupy space, and thus they can be more readily manipulated in various applications without concern for physical mass. Since all these statements accurately represent the properties of X-rays, the option encompassing all of them as a collective truth is correct.