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6 Radioactivity

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Question 77

A factory uses a gamma source to monitor the thickness of rolled steel. During maintenance, workers stand behind thick concrete blocks rather than a thin aluminium screen.

Explain why thick concrete blocks are used rather than a thin aluminium screen.

[2]
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6 Radioactivity Questions

  1. GCSE
  2. /Physics
  3. /6 Radioactivity

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