Across
- 7. It is the process by which a magnet loses it's magnetism,when its two poles are left free.
- 12. It is a water,saline fluid filling the part of the eye between cornea and lens.
- 13. It is the coloured part of the eye,which has muscles and coloured pigments.
- 15. The hidden heat.
- 17. S.I. unit of temperature.
- 18. According to this theory,light is composed of particles[called PHOTONS]which travel in straight lines at a very high speed.
- 20. Sin i/sin r.
Down
- 1. It is a ring of muscles which holds the lens in position.
- 2. The process of change from one state to another at a constant temperature.
- 3. The force between the molecules of two diferrent substances.
- 4. According to this law,energy can neither be created nor destroyed although can be transferred from one body to another.
- 5. The liquids which evaporate faster.
- 6. It is said to occur when a person can't distinguish between diferrent colours though his vision may otherwise be normal.
- 8. It is the property of liquid that depends upon the strength of intermolecular forces.
- 9. Long-sightedness.
- 10. The region around a magnet where its influence can be felt.
- 11. A long cylindrical coil consisting of a large number of turns of insulated wire.
- 14. It is a region on the Retina where optic nerve enters the eyeball.
- 16. A convex lens having one plane surface and one convex surface.
- 19. It is the amount of heat required to change the temperature of a substance by one degree celcius.