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5.2.4a Half-life

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Question 40

A sample of a radioactive isotope emits particles at a rate of 480 per minute.

After 60 hours the rate of emission has decreased to 30 per minute.

What is the half-life of the radioactive material?

A

10 hours

B

12 hours

C

15 hours

D

20 hours

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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