Which of the following is an example of non-ionizing radiation?

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Multiple Choice

Which of the following is an example of non-ionizing radiation?

Explanation:
Non-ionizing radiation is electromagnetic radiation that does not have enough energy per photon to remove electrons from atoms. Visible light fits this, with photon energies around 1 to 3 eV, which are far below the ionization energies of most atoms. X-rays and gamma rays carry much higher energies, capable of ionizing atoms, so they are ionizing radiation. Neutron emissions aren’t electromagnetic radiation at all—they’re high-energy particles, and while they can cause ionization through collisions, they’re not classified as non-ionizing electromagnetic radiation. So visible light is the example of non-ionizing radiation.

Non-ionizing radiation is electromagnetic radiation that does not have enough energy per photon to remove electrons from atoms. Visible light fits this, with photon energies around 1 to 3 eV, which are far below the ionization energies of most atoms. X-rays and gamma rays carry much higher energies, capable of ionizing atoms, so they are ionizing radiation. Neutron emissions aren’t electromagnetic radiation at all—they’re high-energy particles, and while they can cause ionization through collisions, they’re not classified as non-ionizing electromagnetic radiation. So visible light is the example of non-ionizing radiation.

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