A hydrogen absorption line has a wavelength of 434 nm when measured in a laboratory on the Earth.
Table shows the observed wavelength of this line in the light from three galaxies.
Table
| Galaxy | Distance from the Earth in millions of light years | Observed wavelength in nm |
|---|---|---|
| J | 120 | 436 |
| K | 700 | 445 |
| L | 1600 | 460 |
Use Table to describe the pattern shown by the data.
Galaxy M is 3000 million light years from the Earth. Give the observed wavelength of the hydrogen line you would expect from galaxy M. Explain your answer.
41 exam-style questions on AQA GCSE Physics 8.2 Red-shift, covering 8.2 Red-shift. Each one has a worked solution and a mark scheme showing where the marks go.