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Nuclear and particle physics

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Question 33

This question is about the activity of a radioactive source.

Which of the following statements is/are true?

The activity of a radioactive source is:

  1. proportional to the number of radioactive nuclei present.
  2. dependent on the temperature and pressure of the surroundings.
  3. decreasing exponentially over time.
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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