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6.2 Uses and hazards

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Question 25
H

In a chain reaction, every fission releases three neutrons. Assume that each of these neutrons causes one more fission.

The chain starts with a single fission in the first stage.

How many fissions happen in the fourth stage of the chain?

[1]
A

121212

B

818181

C

999

D

272727

Markscheme

6.2 Uses and hazards Questions

  1. GCSE
  2. /Physics
  3. /6.2 Uses and hazards

48 exam-style questions on OCR GCSE Physics 6.2 Uses and hazards, covering 6.2.1 Contamination and irradiation, 6.2.2 Half-life and radiation hazards, 6.2.3 Medical uses of nuclear radiation, 6.2.4 Nuclear fission and chain reactions, and 6.2.5 Nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.

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