Gamma radiations are emitted due to:
Correct answer: C. De-excitation of nucleus
- A. De-excitation of atom
- B. Excitation of atom
- C. De-excitation of nucleus
- D. Excitation of nucleus
Explanation
The correct option is the de-excitation of the nucleus because gamma radiation is a form of electromagnetic radiation emitted by the nucleus when it transitions from a higher energy state to a lower energy state.
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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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