| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| the principle of optics | 1.4 | 0.6 | 8555 | 30 | 23 |
| the | 1.55 | 0.9 | 1598 | 98 | 3 |
| principle | 0.1 | 0.3 | 9145 | 62 | 9 |
| of | 0.46 | 0.5 | 4860 | 8 | 2 |
| optics | 1.53 | 0.2 | 4783 | 35 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| the principle of optics | 1.46 | 0.3 | 3421 | 18 |
