| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| critical angle and refractive index equation | 0.72 | 0.2 | 4505 | 90 | 44 |
| critical | 0.25 | 0.9 | 1848 | 16 | 8 |
| angle | 1.86 | 0.7 | 6097 | 34 | 5 |
| and | 1.05 | 1 | 2182 | 25 | 3 |
| refractive | 0.64 | 0.4 | 5128 | 66 | 10 |
| index | 0.62 | 0.7 | 276 | 33 | 5 |
| equation | 1.73 | 0.6 | 4694 | 69 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| critical angle and refractive index equation | 0.13 | 0.3 | 1065 | 14 |
