define refraction and refractive index???????
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The bending of light towards the normal or away from the normal when entering from first medium to second medium is considered as refraction.
The value at which the medium refracts the light from entering first medium to second medium is called its refractive index.
The value at which the medium refracts the light from entering first medium to second medium is called its refractive index.
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Refraction:- To travel of the light from one medium to another medium through the interface (of two media) is known as the refraction of the light.
Refractive index:- The ratio of sine of angle of incidence to sine of angle of refraction .
Refractive index:- The ratio of sine of angle of incidence to sine of angle of refraction .
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