A spherical surface of radius of curvature 10cm separates two medium X and Y of refractive indices $\raisebox{1ex}{$4$}\!\left/ \!\raisebox{-1ex}{$3$}\right. \mathrm{and} \raisebox{1ex}{$3$}\!\left/ \!\raisebox{-1ex}{$2$}\right.$ respectively. If the object is placed along principal axis in medium X, then