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

1.	The refractive index of air with respect to glass is expressed as gμa = sin isin r. (a) Write down a similar expression for gμa in terms of the angles i and r. (b) If angle r = 90∘, what is the corresponding angle i called? (c) What is the physical significance of the angle i in part (b)?
Answer» The refractive index of air with respect to glass is expressed as $_{g} μ_{a}$ = $\frac{s i n i}{s i n r}$ . (a) Write down a similar expression for $_{g} μ_{a}$ in terms of the angles i and r. (b) If angle r = $90^{\circ}$ , what is the corresponding angle i called? (c) What is the physical significance of the angle i in part (b)?

The refractive index of air with respect to glass is expressed as gμa = sin isin r. (a) Write down a similar expression for gμa in terms of the angles i and r. (b) If angle r = 90∘, what is the corresponding angle i called? (c) What is the physical significance of the angle i in part (b)?

Answer»

The refractive index of air with respect to glass is expressed as $_{g} μ_{a}$ = $\frac{s i n i}{s i n r}$ .

(a) Write down a similar expression for $_{g} μ_{a}$ in terms of the angles i and r.

(b) If angle r = $90^{\circ}$ , what is the corresponding angle i called?