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When light from free space bends towards normal, on hitting a surface, then what should be its refractive index (µ ) ? Is it µ >1 µ < 1,µ=1/2.justify

your answer.


If µ>1 ,r<i then the refracted ray bends towards the normal. In such a case medium 2 is denser than medium 1 or we can say that when a lights travels from a rarer medium to a denser medium it bends towards the normal. 
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