The table shows some substances and some regions of the electromagnetic spectrum.
| Main product of nuclear fusion | Region in which the Sun radiates a major part of its energy | |
|---|---|---|
| A | carbon | X-ray |
| B | carbon | visible |
| C | helium | X-ray |
| D | helium | visible |
Which row shows the main product of nuclear fusion in the Sun's core and one of the regions in which the Sun radiates a major part of its energy?
carbon and X-ray
carbon and visible
helium and X-ray
helium and visible
20 exam-style questions on CIE IGCSE Physics 6.2.1 The Sun as a star. Each one has a worked solution and a mark scheme showing where the marks go.