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12 marksHalf-life

CSEC Physics · May/June 2015 · Paper 2 · Question 1(b)

Using your graph, calculate the average half-life of the sample, determined from the average of two or three values.

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Other parts of this question

  1. 1(a)Plot a graph, on page 3, of Activity (A) versus Time (t).[8 marks]
  2. 1(c)Use the graph to determine the activity of the sample after 25 days.[2 marks]
  3. 1(d)(i)State TWO types of radioactive emissions.[2 marks]
  4. 1(d)(ii)Which type of radioactive emission is the most dangerous to human tissue?[1 mark]

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