Unit of radioactivity is__________________?
Correct answer: D. Curie
- A. Barn
- B. Fermi
- C. Angstrom
- D. Curie
Explanation
The curie is a traditional unit of radioactivity, representing 3.7 × 10¹⁰ nuclear disintegrations per second; the SI unit is the becquerel. Barn measures nuclear cross-section area, whereas fermi and angstrom measure length.
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