| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| refraction at a plane surface | 1.89 | 0.4 | 1644 | 27 | 29 |
| refraction | 1.83 | 0.1 | 5871 | 72 | 10 |
| at | 1.97 | 0.4 | 6567 | 24 | 2 |
| a | 0.11 | 0.9 | 2380 | 38 | 1 |
| plane | 1.87 | 0.6 | 5651 | 55 | 5 |
| surface | 1.56 | 0.9 | 8929 | 15 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| refraction at a plane surface | 0.22 | 0.8 | 761 | 83 |
