in what cases does alight ray not deviate at the inteface of two media?
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A ray of Light does not deviate at interface of two media in two cases. When incidence ray strikes normally at the point of incidence. The figure below shows this. If the refractive indices of two media are equal.
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A ray of Light does not deviate at interface of two media in two cases. When incidence ray strikes normally at the point of incidence. The figure below shows this. If the refractive indices of two media are equal.
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