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6.5 Uses and dangers of radioactivity

6.5 Uses and dangers of radioactivity

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Question 3

To ensure worker safety in a nuclear facility, a radioactive source is enclosed in a thick lead shielding container.

At a specific distance from the source:

  • the dose rate of gamma radiation before the shielding is installed is 8.0×104 μSv h−18.0 \times 10^4\text{ }\mu\text{Sv h}^{-1}8.0×104 μSv h−1
  • the dose rate of gamma radiation after the shielding is installed is 1.6×10−1 μSv h−11.6 \times 10^{-1}\text{ }\mu\text{Sv h}^{-1}1.6×10−1 μSv h−1

Calculate the dose rate of the shielded radiation as a percentage of the unshielded dose rate. Give your answer in standard form or as a decimal.

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Markscheme

6.5 Uses and dangers of radioactivity Questions

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

94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity. Each one has a worked solution and a mark scheme showing where the marks go.

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