Properties of Radiation

Properties of Radiation Quiz

Spec 7.2–9 · Edexcel IGCSE Physics: Quiz

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5 questions, one answer each

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  1. 1. What does the mass (nucleon) number of a nucleus represent?

    • A. The number of protons only
    • B. The number of protons plus neutrons
    • C. The number of electrons
    • D. The number of neutrons only

  2. 2. Which type of radiation is stopped by a sheet of paper?

    • A. Gamma
    • B. Beta
    • C. Alpha
    • D. Neutron

  3. 3. Which type of radiation is most strongly ionising?

    • A. Gamma
    • B. Beta
    • C. Alpha
    • D. X-ray

  4. 4. A nucleus 90234Th^{234}_{90}\text{Th} undergoes beta decay. What is the resulting nucleus?

    • A. 91234Pa^{234}_{91}\text{Pa}
    • B. 88230Ra^{230}_{88}\text{Ra}
    • C. 89234Ac^{234}_{89}\text{Ac}
    • D. 90233Th^{233}_{90}\text{Th}

  5. 5. A student measures the count rate from a radioactive source without first measuring the background radiation. What is the likely consequence for their result?

    • A. The measured activity of the source will be underestimated
    • B. The measured activity of the source will be overestimated, because background radiation is included in every reading
    • C. There is no effect on the result
    • D. The count rate will read as exactly zero

Quiz