If ^i denotes a unit vector along an incident ray, ^r a unit vector al – InterviewSolution

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1.	If ^i denotes a unit vector along an incident ray, ^r a unit vector along the refracted ray into a medium of refractive index 'μ' and ^n a unit vector normal to the boundary of the media directed towards the incident medium, then [consider the first medium to be air]
Answer» If $^i$ denotes a unit vector along an incident ray, $^r$ a unit vector along the refracted ray into a medium of refractive index ' $μ$ ' and $^n$ a unit vector normal to the boundary of the media directed towards the incident medium, then $[$ consider the first medium to be air $]$

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