Monday, 12 September 2011

5.2 UNSEDRSTANDING REFRACTION OF LIGHT

Refraction is the change in direction or bending of light while passing from one medium to another of different optical density.

Laws of Refraction

- The incident ray , the refracted ray and the normal at the point of incidence , all lie on the same plane .
- For two given media . the ratio sin i per sin r is constant , where i is the angle of incident and r is the angle of refraction . [The relationship is also known as Snell’s Law]
- Refractive Index is the name and symbol of the constant .

diagram of REFRACTION 



Phenomenon






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