State and verify laws of refraction using a glass slab.
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Law of refraction or Snell’s law gives us the relationship between angle of incidence, angle of refraction when light is passing from one medium to another.
The equation is ni*sini = nr*sinr
where
ni is the refractive index of incident medium,
nr is the refractive index of refracting medium,
I is the angle of incidence and r is the angle of refraction.
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