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The ratio of sine of angle of incidence to the sine of angle of refraction is constant , for a light of given colour and for a given pair of media. This is known as snell\’s law of refraction.
Sini =Sinr
The ratio of sin of angle of incident to sin of angle of refraction is always constant.Sin i/Sin r =u (mu).It is called snell\’s law
Angle I = R \\ and all three angle of incidence , angle of reflection and normal lies on same plane
sin i/sin r
The sin of angle of incidence is equal to the ratio of angle of reflection Sin I/sin r = constant
Sin i/Sin r
The second law of refraction is also known as Snell\’s law.It states that the ratio of sine of angle of incidence to sine of angle of refraction is always a constant.
In refraction, sin i/sin r=constant=refractive index of that media
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The ratio of sine of angle of incidence to the sine of angle of refraction is a constant for the light of a given colour and given pair of medium..Sin i/sin r = constant ….Refer page 174 of ncrt text.