state snell law what is the SI unit of refractive index?given reason
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snell law state that
a law stating that the ratio of the sines of the angles of incidence and refraction of a wave are constant when it passes between two given media.
i.e sin i/sin r
a law stating that the ratio of the sines of the angles of incidence and refraction of a wave are constant when it passes between two given media.
i.e sin i/sin r
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