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Nuclear and particle physics

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Question 18

Which of the following statements correctly describe the characteristics of radioactive decay?

  1. The half-life of a radioactive isotope is independent of the initial number of undecayed nuclei.
  2. The activity of a radioactive sample is directly proportional to the number of undecayed nuclei present.
  3. The decay constant λ \lambda\,λ of a nuclide increases when the temperature of the sample is raised.
A

Only 1

B

Only 2

C

1 and 2

D

1, 2 and 3

Markscheme

Nuclear and particle physics Questions

  1. A Level
  2. /Physics
  3. /Nuclear and particle physics

90 exam-style questions on OCR A A Level Physics Nuclear and particle physics, covering The nuclear atom, Fundamental particles, Radioactivity, and Nuclear fission and fusion. Each one has a worked solution and a mark scheme showing where the marks go.

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