Radiation Safety Practice Exam

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Study for the Radiation Safety Exam. Test your knowledge with multiple choice questions, each equipped with hints and explanations. Prepare effectively and confidently!

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How many electron volts are in 1 MeV?

  1. 100000 eV

  2. 1000000 eV

  3. 100 eV

  4. 10 eV

The correct answer is: 1000000 eV

The unit "MeV" stands for mega-electron volts, where "mega" signifies a factor of one million. Therefore, 1 MeV is equal to 1,000,000 electron volts (eV). This relationship is derived from the prefixes used in the metric system, where "mega" denotes one million. Thus, when you convert 1 MeV to electron volts, you multiply by one million, resulting in 1 MeV being equivalent to 1,000,000 eV. This makes option B the correct choice for the number of electron volts in 1 MeV. Understanding this conversion is crucial in many areas of physics, particularly in fields involving particle physics and radiation safety, where energy measurements are often expressed in electron volts and its multiples.

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