A doctor wants to look at a patient's kidneys. A radioactive isotope will be injected into the patient. The radiation will be detected by a camera outside the body. The Table shows four isotopes the doctor could use. Table
| Isotope | Type of radiation emitted | Half-life |
|---|---|---|
| W | alpha | 6 hours |
| X | gamma | 6 hours |
| Y | gamma | 30 years |
| Z | beta | 6 hours |
Which isotope, W, X, Y or Z, should the doctor use?
Explain why the isotope you chose in (a) is the most suitable.
Explain why isotope Y would be dangerous to use.
48 exam-style questions on OCR GCSE Physics 6.2 Uses and hazards, covering 6.2.1 Contamination and irradiation, 6.2.2 Half-life and radiation hazards, 6.2.3 Medical uses of nuclear radiation, 6.2.4 Nuclear fission and chain reactions, and 6.2.5 Nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.