1.

State the laws of refraction of light. Explain the term 'absolute refractive imedium' and write an expression to relate it with the speed of light in vacuumndex of a

Answer»

The following are the laws of refraction:

1) The incident ray , the refracted ray and the normal to the intergace of two media at the point of incidence , all lie in the same plane.

2.) The ratio of sine of angle of incidence to the sine of angle of refraction is constant , for the light of a given colour and for the given pair of media. This law is also known as Snell's law of refraction



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