Across
- 2. -----------of light is 300000000 m/s
- 4. symbol of wavelength
- 5. form of energy
- 7. Converging lens
- 8. Bending of light in the boundary of 2 media
- 10. Used in scanning dense body parts like bones
- 11. has longest wavelength in Visible light
- 12. angle of incidence= angle of--------------
- 13. Biologically harmful radiation
- 15. produces heating effect
Down
- 1. Discovered Xrays
- 3. Used for communication and transmission
- 6. rainbow colours
- 8. Discovered by Marie Curie
- 9. Divergent lens
- 14. Frequency of waves is measured in-------