Across
- 2. Pattern of light
- 4. Forms an image
- 6. Substance through which wave travels
- 7. Straight line
- 9. The bouncing back of light
- 10. Huygens
- 12. Transparent optical figure
- 13. Concentrated stream of light
- 16. Ray landing on a surface
- 17. Bending of light as it passes through medium
- 19. Distance between crests
Down
- 1. Separation of light
- 3. The combination of 2 or more waves
- 5. Total displacement is algebraic sum of individual displacements
- 8. Point where rays meet
- 11. Perpendicular line
- 14. Reflective surface
- 15. Bending of waves around obstacles
- 16. Power over area
- 18. Ray leaving a surface