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Which one of the following types electromagnetic radiation causes certain substances to fluoresce a ultraviolet rays b infrared waves c x d cosmic rays?
The correct answer is a. ultraviolet rays
Ultraviolet rays are a type of electromagnetic radiation that can cause certain substances to fluoresce. Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. The light emitted by a fluorescent substance is usually of a longer wavelength than the light that was absorbed.
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