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Radioactivity (A-level only)

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Question 5

The sample currently contains five atoms of Lead-207 for every three atoms of Uranium-235.

How long ago did the meteorite solidify?

A

5.2×1085.2 \times 10^85.2×108 years

B

7.4×1087.4 \times 10^87.4×108 years

C

9.9×1089.9 \times 10^89.9×108 years

D

1.9×1091.9 \times 10^91.9×109 years

Markscheme

Radioactivity (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Radioactivity (A-level only)

128 exam-style questions on AQA A Level Physics Radioactivity (A-level only), covering Rutherford scattering (A-level only), $\alpha$ , $\beta$ and $\gamma$ radiation (A-level only), Radioactive decay (A-level only), Nuclear instability (A-level only), Nuclear radius (A-level only), Mass and energy (A-level only), Induced fission (A-level only), and Safety aspects (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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