The refractive index of air with respect to glass is expressed as gμa – InterviewSolution

1.	The refractive index of air with respect to glass is expressed as gμa = sinisinr if ∠ r = 90∘. What is the corresponding ∠i called?
Answer» The refractive index of air with respect to glass is expressed as $_{g} μ_{a}$ = $\frac{sin i}{sin r}$ if ∠ r = $90^{\circ}$ . What is the corresponding ∠i called?

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