DANB Radiation Health and Safety (RHS) Practice Exam

What type of radiation is characterized as having short wavelengths with great penetrating power?

1. Soft radiation

2. Hard radiation

3. Intermittent radiation

4. Long wavelength radiation

The correct answer is: Hard radiation

The type of radiation characterized by short wavelengths and great penetrating power is known as hard radiation. This includes forms of radiation such as X-rays and gamma rays. The short wavelength of this radiation allows it to penetrate various materials, including biological tissues, which is why it is commonly used in medical imaging and cancer treatments. In contrast, soft radiation typically refers to radiation with longer wavelengths that have limited penetrating ability. This type of radiation is less effective for penetrating solid materials or biological tissues. The other options, such as intermittent radiation and long wavelength radiation, do not accurately describe the nature of radiation concerning its wavelength and penetration characteristics. Therefore, hard radiation is correctly identified as having short wavelengths and significant penetrating power.