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6.5 Uses and dangers of radioactivity

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Question 6
F

Two radioactive sources, X and Y, each have an activity of 3200 Bq3200\ \text{Bq}3200 Bq at the start.

The half-life of source X is 2 days.

The half-life of source Y is 50 years.

a.

Calculate the activity of source X after 8 days.

[2]
b.

Explain which source will be more dangerous to store in 10 years' time.

[2]
c.

A student says:

'Source X is completely safe after 8 days.'

Explain whether the student is correct.

[2]
d.

Give one precaution that should be taken when storing source Y.

[1]
Markscheme

6.5 Uses and dangers of radioactivity Questions

  1. GCSE
  2. /Physics
  3. /6.5 Uses and dangers of radioactivity

97 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity, covering 6.5.1 Uses of radioactivity, 6.5.2 Dangers of ionising radiation and precautions, 6.5.3 Half-life and radiation dangers, 6.5.4 Safety precautions for radiation exposure, and 6.5.5 Contamination and irradiation. Each one has a worked solution and a mark scheme showing where the marks go.

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