State the laws of refraction of light.explain the term absolute refractive index of a medium and write an expression to relate it with the speed of light in vaccium.
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Incident ray , refracted ray and normal all lie on same plane
Sin i / sin r = constant (Snell law)
Absolute refractive index - measure of refractive index when light passes from vacuum to any other medium
speed of light in vacuum/ speed of light in any other medium
Sin i / sin r = constant (Snell law)
Absolute refractive index - measure of refractive index when light passes from vacuum to any other medium
speed of light in vacuum/ speed of light in any other medium
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