Across
- 2. travels at 3,00,000 km/sec
- 3. living luminous body
- 4. meets at common point
- 7. a surface required for the shadow to form
- 9. a material used to make pinhole cam
- 11. transmit through medium
- 12. earth sun and moon
- 14. reflection
- 15. A type of electromagnetic radiation
Down
- 1. inverted image
- 5. Light bulb
- 6. happens on the second full moon day
- 8. Fastest unmanned aircraft
- 10. 1225km/h
- 13. a material that light passes through partially