γ. rays are emitted by the de. excitation of:
Correct answer: D. A nucleus
- A. An atom
- B. An element
- C. A molecule
- D. A nucleus
Explanation
Gamma decay is a nuclear process. It occurs when a nucleus is in a high energy (excited) state, often after a previous alpha or beta decay. The nucleus transitions to a lower energy state by emitting the excess energy as a high. energy photon, known as a gamma ray.
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About Nuclear Physics
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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