E0A01 (C)
What, if any, are the differences between the radiation produced by radioactive materials and the electromagnetic energy radiated by an antenna?
A. There is no significant difference between the two types of radiation
B. Only radiation produced by radioactivity can injure human beings
C. Radioactive materials emit ionizing radiation, while RF signals have less energy and can only cause heating
D. Radiation from an antenna will damage unexposed photographic film but ordinary radioactive materials do not cause this problem
