Question

Refractive index of water with respect to air is 4/3. What is the refractive index of air with respect to water?

Answer 1

$$\begin{gathered} Dearstudent, \\ refractiveindexofairwrtwater=\frac{1}{refractiveindexofwaterwrtair} \\ refractiveindexofairwrtwater=\frac{1}{{\displaystyle \frac{4}{3}}}=\frac{3}{4} \\ Regards \end{gathered}$$