Curie is a unit of
Correct answer: D. radioactivity
- A. energy of gamma rays
- B. intensity of gamma rays
- C. half-life
- D. radioactivity
Explanation
D is the right option because: The Curie (Ci) is a unit of radioactivity, named after Marie and Pierre Curie, pioneers in the field of radioactivity. One Curie is defined as the radioactivity of a quantity of radioactive material in which the number of disintegrations per second is 3.7 × 10^10.
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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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