Technician exam question T0C01
Subelement T0, SAFETY· Group T0C
T0C01
What type of radiation are radio signals?
- A.Gamma radiation
- B.Ionizing radiation
- C.Alpha radiation
- D.Non-ionizing radiation (correct answer)
WhyRadio signals are non-ionizing radiation. Radio signals carry too little energy per photon to strip electrons from atoms or break chemical bonds, which places them in the non-ionizing part of the electromagnetic spectrum, answer D. Gamma and alpha radiation (A, C) are forms of ionizing radiation from nuclear decay, and "ionizing radiation" itself (B) describes the opposite category from what radio waves actually are.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2026-2030 NCVEC Element 2 pool (public domain); the explanation above is original writing, see our methodology.
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