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Radioactivity (A-level only)

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Question 79

A radioactive source is used in an industrial thickness gauge.

When the gauge was manufactured, the activity of the source was $MBq60\text{ MBq}$ .

After $years8.0\text{ years}$ , the source has an activity of $MBq36\text{ MBq}$ .

What will the activity of the source be $years12\text{ years}$ after it was manufactured?

A

$MBq22\text{ MBq}$

B

$MBq24\text{ MBq}$

C

$MBq28\text{ MBq}$

D

$MBq30\text{ MBq}$

Markscheme

Radioactivity (A-level only) Questions

A Level
Physics
Radioactivity (A-level only)

128 exam-style questions on AQA A Level Physics Radioactivity (A-level only), covering Rutherford scattering (A-level only), $\alpha$ , $\beta$ and $\gamma$ radiation (A-level only), Radioactive decay (A-level only), Nuclear instability (A-level only), Nuclear radius (A-level only), Mass and energy (A-level only), Induced fission (A-level only), and Safety aspects (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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