| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| optics and refraction pdf | 0.18 | 0.5 | 8957 | 37 | 25 |
| optics | 1.44 | 0.5 | 8383 | 37 | 6 |
| and | 1.58 | 1 | 2012 | 47 | 3 |
| refraction | 0.26 | 0.2 | 1845 | 89 | 10 |
| 1.05 | 0.9 | 3573 | 13 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| optics and refraction pdf | 1.09 | 0.3 | 6033 | 49 |
