(a) The diagram shows the decay curve for a radioactive isotope that emits only B-particles. 400 count rate 300 counts/min 200 100 0f 20 30 time/min 10 40 Use the graph to find the half-life of the isotope. Show how you have used the graph
(a) The diagram shows the decay curve for a radioactive isotope that emits only B-particles. 400 count rate 300 counts/min 200 100 0f 20 30 time/min 10 40 Use the graph to find the half-life of the isotope. Show how you have used the graph
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Transcribed Image Text:(a) The diagram shows the decay curve for a radioactive isotope that emits only B-particles.
400
count rate
counts/min
300
200
100
0+
10
20
30
40
time/ min
Use the graph to find the half-life of the isotope. Show how you have used the graph
(b) A student determines the percentage of B-particles absorbed by a thick
aluminium sheet, using a source which has a long half-life, and emits only B-particles.
6) Draw a diagram of the apparatus required, set up to perform the experiment.
(ii) List the readings the student needs to take.
1.
2.
3.
(iii) List some safety precautions the student should take.
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