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Radioactivity (A-level only)

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Question 12

A radioactive sample has a measured activity AAA at an instant when it contains NNN parent nuclei. The half-life of this isotope, T1/2T_{1/2}T1/2​, is proportional to:

A

AN\dfrac{A}{N}NA​

B

NA\dfrac{N}{A}AN​

C

ANA NAN

D

1AN\dfrac{1}{A N}AN1​

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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