| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| define the term refractive index | 0.15 | 0.7 | 4731 | 11 | 32 |
| define | 1.77 | 0.5 | 6230 | 18 | 6 |
| the | 0.22 | 0.8 | 9103 | 99 | 3 |
| term | 0.66 | 0.5 | 8551 | 88 | 4 |
| refractive | 0.1 | 0.2 | 3667 | 5 | 10 |
| index | 0.23 | 0.2 | 6222 | 73 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| define the term refractive index | 1.79 | 0.1 | 1605 | 24 |
