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Course: OCR A Level Physics A H556
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Curriculum

OCR A Level Physics A H556

1. Development of Practical Skills in Physics

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2. Foundations in Physics

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3. Forces and Motion

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4. Electrons, Waves and Photons

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OCR H556 chapter questions and answers

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Quiz

1.3.10 Ionising Radiation and Detectors – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
Background radiation should be:
Ignored
Measured and subtracted from the count rate
Added to the count rate
Multiplied by the count rate
2.
A count of 900 has an estimated random uncertainty of:
3
90
30
450
3.
Which type of radiation is stopped by a sheet of paper?
Beta
Gamma
Alpha
All of them
4.
A source's corrected count rate falls from 800 to 200 counts per minute when the distance is increased by a factor of:
2
4
√2
16
5.
A safe way to handle a radioactive source is to:
Hold it in the hand briefly
Point it at a screen to see the beam
Pass it between students
Use tongs and keep it in a lead-lined container when not in use
6.
A tube registers 3000 counts in 5 minutes with a background of 20 counts per minute. The corrected rate is:
600 counts per minute
580 counts per minute
620 counts per minute
3000 counts per minute
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Part of 1. Development of Practical Skills in Physics — see every lesson and quiz in this unit.
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