A sample has an activity of 800 Bq. Calculate its activity after 3 half-lives.
From Paper 12 (Physics), Higher
82 marks
A sample has an activity of 6400 Bq. Calculate its activity after 4 half-lives.
From Paper 12 (Physics), Higher
113 marks
Complete the decay equation for uranium-238 decaying by alpha emission to thorium (Th).
From Paper 12 (Physics), Higher
143 marks
Explain the difference between contamination and irradiation.
From Paper 12 (Physics), Higher
174 marks
Explain why gamma emitters are used as medical tracers but alpha emitters are not.
From Paper 12 (Physics), Higher
204 marks
Describe the process of nuclear fission and how a chain reaction occurs.
Score 0 / 22 · 0 of 7 marked
This paper is written by Plasmo in the style of the OCR GCSE Combined Science exam. It is not a past paper and is not produced or endorsed by the exam board.