Moderate
The rate of decay of a radioactive substances:
Correct answer: B. Decrease with time
- A. Remains constant with time
- B. Decrease with time
- C. Increase with time
- D. May increase or decrease with time
Explanation
Rate of decay of radioactive substance decreases exponentially with time.
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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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