# define laws of refraction ?
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Snell's law (also known as Snell–Descartes law and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.
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law of refraction states that
a.the incident ray, the reflected ray and the normal at the point of incidence is lie on the same plane .
b.the ratio of sine of angle of incidence to the Sine of angle of refraction always be a constant .
and that constant is known as refractive index .
therefore ,
sin<¡ / sin<r = constant
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a.the incident ray, the reflected ray and the normal at the point of incidence is lie on the same plane .
b.the ratio of sine of angle of incidence to the Sine of angle of refraction always be a constant .
and that constant is known as refractive index .
therefore ,
sin<¡ / sin<r = constant
I have written it by myself please mark it as the brainllist if it will help you
please say thanks for this answer too
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