Which of the following is a characteristic of non-ionizing radiation?

• A. It can cause severe biological effects
• B. It typically doesn't have enough energy to ionize atoms
• C. It is more harmful than ionizing radiation
• D. It can penetrate deep into the human body

Answer: (B)

Non-ionizing radiation is characterized by its inability to ionize atoms, which means it does not have sufficient energy to remove tightly bound electrons from atoms. This characteristic distinguishes non-ionizing radiation from ionizing radiation, which includes types such as X-rays and gamma rays that carry enough energy to cause ionization and potentially damage biological tissues.

Many everyday sources of non-ionizing radiation include visible light, ultraviolet light (certain wavelengths), infrared radiation, microwaves, and radio waves. While non-ionizing radiation can produce thermal effects and cause some biological responses, such as heating of tissue, it generally does not cause the direct DNA damage associated with ionizing radiation.

Other options presented refer to different characteristics of radiation: the severe biological effects mentioned can be associated with ionizing radiation; the harm caused by non-ionizing radiation is typically considered less severe than that from ionizing radiation; and although certain types of non-ionizing radiation can penetrate the skin to some extent, they do not have the deep penetration capability characteristic of ionizing radiation.