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Nuclear and particle physics

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Question 5

The characteristics of radioactive decay are studied under various conditions. Which of the following statements correctly describe these characteristics?

  1. The activity of a radioactive sample is unaffected by its chemical bonding environment, pressure, or temperature.
  2. Since the half-life T1/2T_{1/2}T1/2​ is inversely proportional to the decay constant λ\lambdaλ, isotopes with larger decay constants decay more slowly.
  3. A plot of the activity of a sample against the number of remaining undecayed nuclei is a straight line passing through the origin.

A. 1 only B. 1 and 3 only C. 2 and 3 only D. 1, 2 and 3

A

1 only

B

1 and 3 only

C

2 and 3 only

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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