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
104 exam-style questions on CIE IGCSE Physics 6.2 Stars and the Universe, covering 6.2.1 The Sun as a star, 6.2.2a Galaxies and astronomical distances, 6.2.2b The life cycle of a star, 6.2.3a Galaxies and the scale of the Universe, 6.2.3b Redshift, 6.2.3c The Big Bang Theory and cosmic microwave background radiation, and 6.2.3d The Hubble constant and the age of the Universe. Each one has a worked solution and a mark scheme showing where the marks go.