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This quiz contains 5 questions from a mix of 1 subtopics.
How does the student calculate the corrected count?
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The student records 26 as the background count after 1 minute. The student then records a count of 540 after 1 minute with the source present. Calculate the corrected count for 1 minute.
26
540
566
514
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The student places an aluminium sheet between the source and the Geiger-Muller counter. The count in 1 minute has not changed compared to with no aluminium sheet present. The source is a emitter.
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A radioactive source has a corrected count of 125 in one minute with no absorbing material present. Three different absorbing materials are then placed between the source and the detector. Which will be the best absorber?
the material which causes the corrected count to decrease the least
the material which does not change the corrected count
the material which causes the corrected count to decrease the most
the material which causes the corrected count to increase
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Alpha, beta and gamma all have different penetrating capabilities. Put them in order of increasing penetration capability.
Beta, Alpha, Gamma
Alpha, Beta, Gamma
Alpha, Gamma, Beta
Gamma, Beta, Alpha
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