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5.2.4a Half-life

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Question 71

A sample of radium-226 decays and changes into radon-222. The half-life of radium-226 is 1600 years.

Which fraction of the radium-226 will remain after 4800 years?

A

14\frac{1}{4}41​

B

18\frac{1}{8}81​

C

116\frac{1}{16}161​

D

132\frac{1}{32}321​

Markscheme

5.2.4a Half-life Questions

  1. IGCSE
  2. /Physics
  3. /5.2.4a Half-life

144 exam-style questions on CIE IGCSE Physics 5.2.4a Half-life. Each one has a worked solution and a mark scheme showing where the marks go.

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