Types of nuclear radiation

Types of nuclear radiation Quiz

Spec 137–140 · Edexcel International A Level Physics: Quiz

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5 questions, one answer each

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  1. 1. A source gives 450 counts in 3.0 minutes and the background is 20 counts per minute. What is the corrected count rate?

    • A. 170 counts per minute
    • B. 150 counts per minute
    • C. 130 counts per minute
    • D. 430 counts per minute

  2. 2. Which radiation is the least ionising?

    • A. Alpha
    • B. Beta-minus
    • C. Gamma
    • D. They are all equally ionising

  3. 3. What happens to the proton number and nucleon number in alpha decay?

    • A. Z falls by 4 and A falls by 2
    • B. Z falls by 2 and A falls by 4
    • C. Z rises by 1 and A is unchanged
    • D. Both are unchanged

  4. 4. Which nuclear equation correctly shows beta-minus decay?

    • A. 614C→513B+11p^{14}_{6}\text{C} \rightarrow {}^{13}_{5}\text{B} + {}^{1}_{1}\text{p}
    • B. 614C→514B+10e^{14}_{6}\text{C} \rightarrow {}^{14}_{5}\text{B} + {}^{0}_{1}\text{e}
    • C. 614C→410Be+24He^{14}_{6}\text{C} \rightarrow {}^{10}_{4}\text{Be} + {}^{4}_{2}\text{He}
    • D. 614C→714N+−10e+νˉe^{14}_{6}\text{C} \rightarrow {}^{14}_{7}\text{N} + {}^{0}_{-1}\text{e} + \bar{\nu}_e

  5. 5. A gamma source gives a corrected count rate of 800 counts per minute. 10 mm of lead halves the rate. What is the rate behind 30 mm of lead?

    • A. 400 counts per minute
    • B. 100 counts per minute
    • C. 267 counts per minute
    • D. 0 counts per minute

Quiz