Question

\({ }^{\mathrm{Air}} \mu_{\text {Liq }}\) is 1.4 what is the value of \({ }^{\mathrm{Liq}} \mu_{\text {Air }}\)?

Answer 1

The refractive indices in opposite directions are reciprocals.

Therefore, \({ }^{\mathrm{Liq}}\mu_{\mathrm{Air}} = \dfrac{1}{^{\mathrm{Air}}\mu_{\mathrm{Liq}}}\)

\[= \frac{1}{1.4}\]

≈ 0.71