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4.2 Atoms and nuclear radiation

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Question 22
H

A radioactive isotope has a half-life of 12 hours. What is the ratio of the initial count rate to the count rate after 3 days?

[1]
A

6:1

B

32:1

C

64:1

D

128:1

Markscheme

4.2 Atoms and nuclear radiation Questions

  1. GCSE
  2. /Physics
  3. /4.2 Atoms and nuclear radiation

40 exam-style questions on AQA GCSE Physics 4.2 Atoms and nuclear radiation, covering 4.2.1 Radioactive decay and nuclear radiation, 4.2.2 Nuclear equations, 4.2.3 Half-lives and the random nature of radioactive decay, and 4.2.4 Radioactive contamination. Each one has a worked solution and a mark scheme showing where the marks go.

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