The table shows the average radiation dose received in one year by four groups of workers.
Table: The average radiation dose received in one year by four groups of workers
| Group of workers | Average dose in one year in mSv |
|---|---|
| W | 0.8 |
| X | 1.6 |
| Y | 2.4 |
| Z | 6.4 |
Which conclusion can be made from the data?
Group Z receives four times the dose received by group X.
Group Z receives four times the dose received by group Y.
Group Y receives four times the dose received by group W.
Group W is four times as likely to be harmed as group Z is.
40 exam-style questions on AQA GCSE Physics 6.2 Electromagnetic waves, covering 6.2.1 Types of electromagnetic waves, 6.2.2 Properties of electromagnetic waves 1, 6.2.3 Properties of electromagnetic waves 2, 6.2.4 Uses and applications of electromagnetic waves, 6.2.5 Lenses, and 6.2.6 Visible light. Each one has a worked solution and a mark scheme showing where the marks go.