Question

relation between R. F of water with respect to air and the R. f of air with respect to water

Answer 1

R.F. of water with respect to air =

$\frac{1}{r.f. \: of \: air \: with \: respect \: to \: water}$

Answer 2

of water is 1.33 so we can and we can expect that the refractive index of water with respect to air is equal to 1 upon 1 refractive index of water to air