A beta particle is a _.
Correct answer: A. Fast moving electron
- A. Fast moving electron
- B. Slow moving electron
- C. Electron at rest
- D. None of these options are correct
Explanation
A beta particle is actually a fast moving electron. It is emitted from the nucleus of an atom during radioactive decay. Beta particles have a negative charge and a mass that is approximately the same as the mass of an electron.The speed of a beta particle can range from a few thousand to a few hundred thousand kilometers per second. The energy of a beta particle is also variable, but it is typically in the range of 0.1 to 3 MeV.Beta particles are used in a variety of applications, including medical imaging, radiation therapy, and smoke detectors.
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Atomic nuclei contain protons and neutrons, with nuclear size, mass defect and binding energy describing their stability. The work covers alpha, beta and gamma decay, decay equations, half-life and decay rate, along with radiation safety and medical applications such as imaging, radiotherapy and tracers.
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