what is the law of refraction of light
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1. a ray of light bends towards the 'normal' when it goes (obliquely) from an optically rarer medium to optically denser medium.
2. a ray of light bends away from the 'normal' when it goes (obliquely) from an optically denser medium to an optically rarer medium.
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Explanation:
Laws of refraction of light(Snell s law of refraction)
Refraction is due to change in the speed of light as it enters from one transparent medium to another. ... The incident ray, the refracted ray and the normal to the interface of two transparent media at the point of incidence, all lie in the same plane.
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