| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| reflection and refraction of plane waves | 1.65 | 0.9 | 3315 | 24 | 40 |
| reflection | 1.59 | 0.6 | 5907 | 79 | 10 |
| and | 0.54 | 0.7 | 1837 | 33 | 3 |
| refraction | 1.48 | 1 | 863 | 73 | 10 |
| of | 0.25 | 0.1 | 2867 | 21 | 2 |
| plane | 1.32 | 0.6 | 3478 | 11 | 5 |
| waves | 0.6 | 0.1 | 8261 | 51 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| reflection and refraction of plane waves | 1.99 | 1 | 8155 | 2 |
