Quelpr
4 marksHalf-life

CSEC Physics · May/June 2014 · Paper 2 · Question 6(a)(ii)

The activity of a Bismuth sample decreases to one-sixteenth of its original activity in 20 days.

Calculate the half-life of Bismuth.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 6(a)(i)Define the term 'half-life'.[2 marks]
  2. 6(b)State TWO useful applications of radioisotopes and TWO precautions to be taken when handling radioisotopes.[4 marks]
  3. 6(c)Calculate the new mass. [c = 3 × 10⁸ m s⁻¹][5 marks]

More practice: the rest of this paper · more Half-life questions · all CSEC Physics past papers