explain refraction and Snell's law
Answers
Answer:
the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.
change in direction of propagation of any wave as a result of its travelling at different speeds at different points along the wave front.
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Snell’s Law
It gives the amount of bending of light rays. Also determines the relationship between the angle of incidence, the angle of refraction and relative indices of given pair of media. It is the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant for the light of given color and for the given pair of media.
Laws of Refraction
The angle of incidence is the angle between the incident ray and the normal; denoted as ‘i’. The angle of refraction is the angle between the refracted ray and the normal; denoted as ‘r’. Laws of refraction state that:
The incident ray, reflected ray and the normal, to the interface of any two given mediums; all lie in the same plane.
The ratio of the sine of the angle of incidence and sine of the angle of refraction is constant.